The group uses Ray's invention to track new recruits to help save the universe. The Monitor sends Iris, Clark and Lois in search of a mysterious Kryptonian, while Kate and Kara head out to find Bruce Wayne. In addition, Mia challenges Sara, Rory discovers a hidden talent, and Lex Luthor returns. This crossover begins on Supergirl S5E09, and continues on The Flash S6E09, Arrow S8E08, and Legends of Tomorrow S05E01.

More of Alice’s dark past is uncovered when Cartwright shares a twisted story with Kate while Jacob goes searching for his wayward daughter. Mary and Luke follow a lead on Beth's killer.

On the Kane sisters’ birthday, Kate and Alice contend with demons from the past, and an unexpected guest makes a surprise appearance in Gotham.

Kate begins to question her instincts and Luke gets upsetting news. Alice seeks her sister’s help with a special task.

Kate and Alice continue their sister/nemesis dance, while Alice and Mouse construct their most evil plan yet. Mary invites Kate to a special event honoring Catherine and Jacob makes a decision that leaves Kate perplexed.

Alice takes Kate down the sad, winding road of her life in the days after the accident as Jacob and Sophie attempt to track them. Mary has an argument with Catherine which sends her looking for Kate at Wayne Tower, but instead she becomes unwelcome company for Luke.

The city waits for another visit from who they think is Batman. Alice continues to taunt Kate. Mary gets an unexpected new friend. As Batwoman faces a new enemy, Kate realizes she must make a decision.

Batwoman enlists Luke and Julia for an undercover mission to recover one of the most important items from her cousin’s arsenal. While Alice continues developing her devious plans within Arkham’s walls, she gets an unexpected visit from Jacob Kane who needs her help. Meanwhile, Mary tries to prove herself to Kate. As Sophie gets closer to a co-worker, Kate reunites with an old flame.

With the hunt for Alice heating up, Kate faces a difficult decision.

When members of Gotham's intelligentsia begin disappearing, Commander Kane, Sophie and the Crows go searching for the newest homicidal threat to the city. In the meantime, Kate is consumed with someone’s betrayal and starts questioning the loyalty of everyone around her just when she needs them most. So when Luke and Julia go missing, Batwoman must rely on Mary and a former foe to deploy her rescue mission. Meanwhile, Alice enlists Tommy Elliot to help acquire an elusive item that her sister also seeks.

When one of Gotham's former heroes returns to his old stomping grounds to settle a score, both Batwoman and Commander Kane find themselves on the defensive. Meanwhile, Alice has uncovered what could finally take down Batwoman, but she is losing hold on her henchman Mouse and Hush, sending her spiraling into her most wicked self. Luke immediately focuses on finding a way to protect Batwoman from Alice, and Mary has a chance to be the sister Kate has needed all along. New information surfaces, forcing Julia to warn Sophie about the person pulling the strings. And in a final standoff, when Commander Kane refuses to retreat from his war on Batwoman, Kate may find herself more than heartbroken by her father’s choices.

Batwoman encounters a new challenge when an old villain resurfaces, testing the heroics of Gotham’s most stand-up citizens. Alice’s limits are tested.

A new villain sinks her teeth into Gotham and The Hold Up opens in grand fashion. Sophie reluctantly requests that Batwoman keep her distance knowing their interactions could compromise her career.

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

While Gotham busies itself reacting to Batwoman’s awkward encounter, Alice celebrates her ultimate act of vengeance with Mouse. A devastated Mary focuses on Jacob Kane’s trial, while Sophie seeks advice about her love life from someone unexpected. As they tackle the newest threat to Gotham, Luke prioritizes protecting Batwoman’s secret, and Kate must decide what she is willing to do to honor Batwoman’s identity...and her own.

As Ryan’s family dynamic grows more complicated, she also finds herself in the middle of a Bat Team stand-off between Luke and Mary. Meanwhile, Alice finds a new sidekick to do her bidding.

Batwoman’s hands are full as she juggles Jada’s demands, Mary’s ever-increasing power and a new romantic entanglement. Loyalties are tested and motives come into question as Batwoman races against the clock to once again save the city and those closest to her.

Joining forces with Jada, Batwoman and a panicked Bat Team must race against the clock as Marquis's nefarious plan balloons into something Gotham would never have suspected...and won't see coming. And as Alice reaches her breaking point, an empathetic Mary makes another appeal on behalf of her sister for the Joker's buzzer, but everyone wonders - is Alice beyond saving?

Ryan, Sophie and Luke attempt to track down the OG Poison Ivy when all signs point to Pamela Isley’s reappearance in Gotham. At the same time, Mary feels drawn by a powerful force and Alice suddenly feels very protective of her stepsister. Meanwhile, Jada hasn't given up on rehabilitating Marquis and seeks the help of an old friend.

An unfortunate incident in downtown Gotham alerts Batwoman and the Bat Team that another missing trophy has made its way into the wrong hands. Meanwhile, a new member of the Jet family surfaces when Marquis Jet makes a not-so-subtle entrance, interrupting a very personal moment between Ryan and Jada. Batwing must decide if he’s ready to suit up again, and the Hippocratic Oath forces a strained sisterly moment between Alice and Mary.

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

An unnerving discovery in a garden shed sends Renee Montoya rushing to Ryan to ensure the city is on high alert. Her terrifying theory — a Bat Trophy has entangled a new host, and her thorny ways are weaving their way through Gotham. Alice is suspiciously eager to help the Bat Team, and Sophie seeks vengeance for an incident involving her sister.

Ryan, Sophie and Jada come together to formulate a plan to stop Marquis, while Mary seeks to make amends for the harm she did as Poison Ivy. Meanwhile, Alice continues to spiral out of control and contend with her mental demons.

A homeless 25-year-old named Ryan Wilder stumbles upon Kate's batsuit.

While Mary and Alice continue their sisterly bonding, Ryan, Luke and Sophie are desperate and willing to do almost anything to stop them. Renee is forced to revisit her heartbreaking past. Meanwhile, Marquis grows more unhinged and throws a spectacularly sinister soiree at Wayne Tower... and everyone is invited.

As Batwoman continues to keep the streets of Gotham safe, Batwing joins in on the action, but Luke quickly realizes he hasn't quite mastered his suit. When Ryan pays Alice a visit to ask about the bombshell she dropped, Ryan must decide if she should go down the rabbit hole of her past. As Mary prepares to finally graduate from medical school, she feels the absence of her family more than ever. When an Alice admirer stumbles upon one of the missing Bat Trophies, Gotham and the Bat Team get mixed up in the madness, culminating in a shockingly gruesome graduation... and an equally shocking new partnership.

After her quick spin in the Batgear, Ryan Wilder is back to facing the daily challenges of life as herself. Meanwhile, Alice has a new, devious plan to get the attention of both Gotham and Safiyah. With Kate still missing and the city in an uprising, Luke and Mary are desperate to find a stand in. In a pinch, Ryan dons the suit again and comes face-to-face with Alice for the first time. Back at Crows Headquarters, Sophie and Commander Kane try to uncover who may have had a vendetta against Kate.

Batwoman confronts Gotham's biggest foe, while new information forces those closest to Kate to make some difficult decisions. Ryan's feelings for Angelique puts her partnership with Luke and Mary at risk, while Alice goes on a warped walk down memory lane.

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.

When Ryan makes Gotham’s “30 Under 30” list, Luke worries about how Marquis's involvement in Ryan’s rising popularity as Wayne Enterprises’ acting CEO will land with Jada. Mary returns from a late night out not feeling quite herself, while Alice’s hallucinations grow stronger. And when Sophie’s sister, Jordan, goes missing, she and the Bat Team quickly realize that Freeze’s missing weapon hasn’t been fully contained.