Alice's biggest fan gets his hands on Mad Hatter's mind-control top hat, and goes on a crime spree.

Batwoman is forced to team up with Alice to hunt down the new Killer Croc. Meanwhile, Ryan meets her birth mother.

Ryan confronts her biological mother and get a surprising offer from her new brother. Meanwhile, the Bat Team searches for a canister containing Mr. Freeze's cold agent.

The Bat Team discovers that someone is using a variation of Mr. Freeze's freezing compound to experiment on freezing kidnapped people and reviving them - and Sophie's sister Jordan is the next target.

Ryan asks Sophie to accompany her to a dinner at Jada's to do recon on what her estranged mother knows about Wayne Enterprises; as the terrifying evening unfolds, Ryan witnesses another side of Marquis and her mother.

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; Alice finds a new sidekick to do her bidding.

While Mary and Alice continue their sisterly bonding, Ryan, Luke, and Sophie are willing to do almost anything to stop them; Renee is forced to revisit her heartbreaking past.

Ryan, Sophie and Luke attempt to track down the original Poison Ivy when all signs point to Pamela Isley's reappearance in Gotham; Mary feels drawn by a powerful force; Alice suddenly feels very protective for her stepsister.

Batwoman's hands are full as she juggles Jada's demands, Mary's ever-increasing power and a new romantic entanglement; Batwoman races against the clock to once again save the city and those closest to her.

Just when it seems things can't get worse, Batwoman's identity is once again at risk of being exposed; some of Gotham's most villainous unite; Sophie joins Luke on a mission; Alice gets into Mary's head.

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

Batwoman and a panicked Bat Team must race against the clock as Marquis' nefarious plan balloons into something Gotham would never have suspected; a final stand-off between brother and sister puts Ryan's life and new love on the line.