When Kate Kane is presumed dead, the mantle of Batwoman is passed on to a young woman who uses it to avenge her adopted mother's killers.

Ryan Wilder is back to facing the daily challenges of life as herself. Alice has a new, devious plan to get the attention of both Gotham and Safiyah. Ryan comes face to face with Alice for the first time.

Safiyah brings Alice to her island sanctuary to make a few things clear. Meanwhile, Batwoman tracks down a hitman, Victor Zsasz, with connections to Safiyah.

Jefferson is still mourning the death of his long-time friend, Detective Henderson. Gambi is presented with an interesting opportunity. Lynn and Jefferson continue to clash.

The war between the 100 and the Kobra Cartel rages on. Lynn continues to be concerned about Jefferson.

Jefferson is feeling even more lost after a frustrating therapy session. Anissa continues to care for a still comatose Grace. Lynn has a breakthrough.

As Batwoman attempts to fight the proliferation of Snake Bite through Gotham, a random encounter forces Ryan to revisit her painful past. and she determines to ensure others like her don't go unnoticed.

Batwoman is approached by Cmr. Kane and Agent Moore to boost an infamous work of art that reveals the way to Coryana and Kate. Alice discovers that she may not remember everything about her time on Coryona.

Clark and Lois travel to Smallville with their twin sons, Jonathan and Jordan, when someone in the family has died. As the family makes a decision about where to live, Superman faces a powerful new opponent, and one of the Kent boys discovers that he has inherited his father's powers.

As Ryan's Kryptonite wound worsens, it hinders her capabilities as Batwoman. Efforts to copy the Desert Rose serum endanger Mary and Cmdr Kane. Meanwhile Alice's reunion with someone from Coryana presents unexpected complications.

Jefferson pays Tobias a visit and warns him to stay away from his family.

When an experiment to save Barry's speed backfires, Nash Wells searches for a way to save The Flash and comes up with a dangerous plan. Iris makes a startling realization inside the Mirrorverse.

When adjusting to their new lives in Smallville, Lois and Clark make an important decision concerning one of their sons. Tensions begin to rise between Lois and Morgan Edge. Lana Lang Cushing invites the Kent family over for a barbecue.

Clark shares some of his Kryptonian history with Jordan and Jonathan during a family breakfast. Meanwhile, Lois and Chrissy dig deeper to uncover the truth about Morgan Edge.

Gambi supports Black Lightning as he departs on a special mission. Meanwhile, Grace tries to persuade Anissa to let her guard down.

As Ryan's condition worsens, she questions Batwoman's "no killing" code when she realizes the opportunity to avenge her mother is slipping away. Tatiana fills in the gaps for Alice about her time on Coryana and her history with Ocean.

Jefferson crosses a line with Lynn. Meanwhile, Anissa shares some important news. Lastly, Tobias makes a surprising move.

When Barry suddenly gains the power of speed thinking, he attempts to use his new gift to save Iris. While Barry is thrilled with his new power, Cisco is hesitant to trust it. Eva must face a shattering truth.

As Eva becomes more powerful, Barry and team must find a way to stop her. An old friend risks her life to help.

Lois keeps probing into Morgan's involvement with Smallville. Meanwhile, Sam tells Clark to choose between being a superhero and a father.

Batwoman's abilities are tested like never before, while Alice's search for Kate continues. Sophie and Jacob set their sights on Coryana. Luke and Mary contend with an unexpected guest.

Batwoman hunts down Black Mask, who has taken Angelique prisoner.

Abra Kadabra returns to Central City seeking revenge for an unimaginable wrong. Meanwhile, a mysterious behemoth strikes at the city.

As Smallville celebrates its first Harvest Festival since Martha's passing, Clark is reminded what his mother meant to him and learns a lesson that will help him move past her death. Meanwhile, Lois makes a breakthrough in the investigation of Morgan Edge. Lastly, Kyle tries to reconnect with Lana, but it seems like he might be falling back into his old ways.

A new villain, Psych, strikes at the people of Central City, giving them visions of their worst fears and Flash is his next target.

Cisco and Chester travel back in time and get stuck in 1998, repeating the same day over and over again. The key to returning home is at Chester's childhood home but he refuses to visit.

Lex attempts to take control of half the population of Earth, as the first step in his plan to "fix" the universe.

While Lex faces trial for his crimes, J'onn and Alex try to access the Phantom Zone to rescue Supergirl.

A new villain, Kilovolt, attacks the new community center, and Angelique gives up names in Forbes' assassination.

Grace is abducted while she and Anissa go to Akashic Valley for their honeymoon, and Khalil goes looking for Grace.

When a mysterious ice powered enemy frames Frost for a brutal crime, she must find a way to clear her name. Barry and Iris have a surprise houseguest, and Joe continues to deal with Kristen Kramer.

Supergirl makes a new ally. Lena and Lex battle for control of Luthor Corp.

With Batwoman and The Crows each hot on the trail of the False Face Society, their efforts collide, and tension escalates. Alice seeks out Enigma,and Sophie and Ryan find some common ground

The FBI pays Jefferson a visit. Meanwhile, Anissa surprises Grace.

Gambi warns the Pierce family of a possible crisis looming.

Supergirl finds an opportunity to escape from the Phantom Zone but it comes with some dangerous strings attached. Lena joins the Super Friends on a mission but finds she disagrees with their plan of action.

Brainiac-5 and Nia time-travel to 2009 Midvale to get a sample of Kara's DNA.

The Legends go looking for Sara, who has been abducted by aliens.

Batwoman and Alice team up to rescue Angelique and Ocean from Black Mask's gang.

Black Lightning sends Gambi an SOS. Lynn finds herself in some serious trouble.

With Frost facing an unjust punishment for her past crimes, Caitlin goes to great lengths to save her sister. Meanwhile, Barry's efforts to protect Speed Force Nora lead to a shocking discovery.

Young Kara experiences kryptonite for the first time, Nia and Brainy are trapped by invading aliens, and a young Cat Grant may be the reason Supergirl never gets out of the Phantom Zone.

Sara and Gary crash-land and meet an unexpected ally. Meanwhile, the Legends track an alien to a burger joint in 1955 San Bernadino.

When Sophie must face a foe from her rookie days with The Crows, Ryan, Mary and Luke are also pulled into the villain's game, the tables are turned on Alice when she finds herself in dire circumstances. Jacob continues to revisit the past.

Jefferson takes Khalil up on his offer to help. Meanwhile, Lynn finds herself wrestling with what could be the biggest decision of her life. Lastly, Tobias follows through on a hunch.

After a devastating betrayal, Barry turns to Timeless Wells for help. Iris leads Team Citizen down a dangerous road in search of answers. Cisco confides his biggest fear to Kamilla.

As the Super Friends brave the Phantom Zone to bring Supergirl home, each member of the team is confronted by visions of their worst fear.

The Legends try to stop an alien invasion by traveling to 2045 and having Zari perform in a TV talent show.

Batwoman is faced with a new challenge when Gotham's addicts become ravenous for more than the next fix.

Jefferson realizes that sometimes, an admission of weakness can be a show of strength. Tobias is focusing on an end game

Iris is pushed to the limit as she seeks to uncover the mysterious truth about Psych. Barry initiates a new training system, that could potentially backfire. Joe and Cisco make life-altering decisions.

Clark reconsiders his decision to let Jordan play football. Lois' continued investigation of Morgan Edge requires her to trust an unexpected ally.

In 1962 Cuba, the Legends try to get history back on track when Fidel Castro gets a nuclear warhead.

After four seasons, the game-changing, relevant and electrifying series comes to an end.

Barry and Iris come together to try and stop a dangerous force from destroying Central City.

Clark struggles to help Jordan who is grappling with a new power. Lois enlists Clark's help which leads to a surprise encounter.

Clark encourages Lois to reach out for help after noticing her reaching a breaking point. Meanwhile, Jonathan finds himself in a dangerous situation. Lastly, Kyle encourages Sarah to audition for the musical revue at school.

Astra gets a chance to learn real magic, while Sara meets Bishop and learns what he intends.

As Luke's life hangs in the balance, repercussions from the devastating event are the catalyst for some life-changing decisions for those around him.

Cisco and Kamilla tell the team they are leaving Central City. Barry, Iris and Caitlin don't have much time to digest the news because a new version of Rainbow Raider strikes and OG Team Flash must join together one final time.

Lois, Chrissy and Clark team up to piece together the significance of Smallville to Morgan Edge.

Mick takes the Waverider and Kayla to try and find Sara. after a report of an attack, the Legends return to their new headquarters. Zari is suspicious of Constantine's behavior but isn't surprised when she learns the truth.

When a familiar foe descends upon Gotham, Batwoman and Mary find they must rely on each other more than ever. Alice has a new mission and gets an unexpected ally to join her.

Cecile faces her past when a new enemy traps her in a mental mindscape. Chester questions his place on the team taking Cisco's position.

Lana reaches out to Lois and Clark when Kyle starts behaving strangely. Jonathan opens up to Jordan. Sarah storms out after accusing her mom of always covering for her dad.

The Legends make a last-ditch effort to keep Sara from being abducted, even knowing that it will after the timeline. Sara is shocked when Rory finds her on the mystery planet.

Batwoman struggles as Black Mask continues to raise the stakes with Circe as his henchwoman. Alice and Safiyah cross paths once again.

When Ultraviolet returns to Central City, Allegra is determined to find her cousin and change her heart. Joe finds evidence that Kristen Kramer may not be the good cop she appears to be.

Clark makes a startling discovery about Morgan Edge.

The Legends go on a "normal romp" to investigate an alien that has taken up residence in the Old West.

Black Mask unleashes chaos on Gotham, and Ryan tries to stop him without the Batsuit.

When an army of Godspeeds attack Central City, Barry and Iris must put their family plans on hold and focus on the latest threat to their home. Chillblaine is released from prison and claims to be reformed but Frost has her doubts.

John Diggle arrives in Central City with a weapon to help Barry stop the Godspeed War; Allegra and Ultraviolet's new bond is put to the ultimate test, while Joe and Kristin Kramer are hunted by a former colleague of hers.

Mick deals with fatherhood when he learns that Lita is pregnant, while the other Legends try to save Behrad's favorite show when an alien crashlands on the set.

Lois and John Henry can't seem to agree on the best way to stop Morgan Edge. Jonathan encourages Jordan to focus on strengthening his powers to help locate their dad. An old friend is brought in to help with the search.

Barry and Iris greet their future children, XS and Bart, only for a shocking secret to threaten their new familial harmony. The Godspeed war intensifies and threatens to destroy Central City.

The Flash enlists a host of speedster allies, including Iris and his children from the future Bart and Nora-West Allen to end the speedster war and defeat a deadly new adversary, the villainous Godspeed.

John and Spooner travel back Spain 1935 to find the Fountain, while the Legends deal with an adolescent Gus-Gus.

Superman pays a visit to Morgan Edge. Lois and Chrissy work together on a story. Jonathan finds a welcome distraction during a stressful school day.

When the Legends track down another alien pod, they find a device that transports them to a cosmic bowling alley. Nate plans a romantic date for him and Zari, but nothing goes as planned.

While Waverider makes it way back to Earth via normal rather than jump drive, Gary suggests that they play a game. However, John uses his newfound powers to make the game real and deadly.

With summer break around the corner, Pat suggests the family take a vacation. Beth stumbles upon a major secret her parents have been keeping from her. Rick secretly tracks Solomon Grundy after suspecting he may be still in the area.

Lois is worried about Jordan as he and Sarah continue to grow closer. Clark pays Lana a visit. Jonathan been spending more and more time with John Henry.

Superman's worst nightmare comes to life, and Lois confronts Leslie Larr. Lana, Kyle and Sarah agree to stay to help General Lane.

The Whitmores get a visitor, but Courtney is the only one suspicious of her. Meanwhile, an antiques dealer comes to Blue Valley and Pat recognizes him from the past.

After getting a taste of the superhero life, Mike pleads with Pat to let him join the team. Elsewhere, after seeking help from Thunderbolt, the JSA prepare for a confrontation with The Shade.

Ava tries to get into the captive Bishop's mind, but who is playing who? Meanwhile, Mick goes into labor and John fights his addiction.

Kara copes with returning to Earth, with Zor-El posing as her uncle.

Supergirl hunts down alien prisoners on a work-release program, while Kelly investigates one of their younger brothers.

John teams up with Bishop and travels to Texas 1925 to find the Fountain and regain his magic.

Cindy begins to gather her new ISA, while the Crocks break out of prison to see their daughter's tryouts.

Sara and Ava prepare for their wedding, while aliens threaten to overrun the Earth.

Eclipso finds a new host, and the JSA hunt for the demon.

Cindy and her new team make their move against the JSA, leading to an epic showdown.

Supergirl struggles to save affordable housing, so Orlando and Joey have a place to live. Meanwhile, Nxyly plots to regain her powers.

Nxyly attempts to reunite the Allstone using Mxyzptlk as a power source. Meanwhile, Lena finds out the truth about her mother.

The people of the Heights are affected by the building collapse, and a new hero emerges to protect them.

When the guilt over Brainwave's death becomes too much to handle, Yolanda is forced to make a heartbreaking decision.

With his world crashing down around him, Rick focuses his attention on protecting Solomon Grundy after learning hunters are after bear in the woods. Beth becomes the target of Eclipso's latest plan.

Supergirl and Nxyly battle for the Totem of Courage, and each get part of it. The part that Supergirl acquires causes chaos.

Nxyly gets hold of the Humanity Totem, causing chaos throughout National City. Meanwhile, Esme meets her new foster family and Lena attempts to cast her first spell.

Pat is reminded of painful memories from his past. Mike is forced to control the guilt he feels for his role in Icicle's death. Courtney struggles to hold on to hope after Eclipso targets those around her.

Courtney learns that Pat lied to her, and she and Pat go to find Jennie to help them restore the diamond and put an end to Eclipso.

Supergirl continues to fight Nyxly for the remaining totems but after Nyxly kidnaps William, Supergirl realizes she needs to take a more proactive stance to keep National City safe. Meanwhile, Alex faces the biggest challenge of her life.

Nxyly goes after the Dream Totem, and Nia must join forces with her sister Maeve to stop the imp. Meanwhile, Supergirl worries that she's being pulled in too many different directions.

When Lex Luthor appears by Nyxly's side, Supergirl and team must deal with the emotional fallout of facing their two biggest foes at the same time. Alex makes plans for the perfect proposal to Kelly, but work keeps getting in the way.

Esme has a fight at school, and Alex and Kara have a fight over how to settle it. Meanwhile, Nxyly searches for the Truth Totem.

After a frightening encounter leaves Courtney's life hanging in the balance, the team band together to determine their next steps.

With the looming threat of Eclipso hanging over them, Courtney seeks help from the unlikeliest of places. Meanwhile, Mike's search to find Thunderbolt leads him straight to his friend Jakeem, and Pat goes to extreme lengths to protect Rick.

As Eclipso unleashes the final part of his master plan, Courtney, Pat, and the JSA band together to take him down once and for all.

Supergirl and the super friends take drastic action after a loved one is kidnapped by Nyxly and Lex. An unlikely ally steps in to help the team.

Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly prepare to walk down the aisle.