CW DC Synopses May 17-19

The CW has released more episode descriptions, including a couple of de facto season finales.

Batwoman s1e20 "O, Mouse!"

SEASON FINALE – When one of Gotham’s former heroes returns to his old stomping grounds to settle a score, both Batwoman (Ruby Rose) and Commander Kane (Dougray Scott) find themselves on the defensive. Meanwhile, Alice (Rachel Skarsten) has uncovered what could finally take down Batwoman, but she is losing hold on her henchman Mouse (guest star Sam Littlefield) and Hush (guest star Gabriel Mann), sending her spiraling into her most wicked self. Luke (Camrus Johnson) immediately focuses on finding a way to protect Batwoman from Alice, and Mary (Nicole Kang) has a chance to be the sister Kate has needed all along. New information surfaces, forcing Julia (guest star Christina Wolfe) to warn Sophie (Meagan Tandy) 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. Amanda Tapping directed the episode written by Holly Henderson and Don Whitehead (#120). Original airdate 5/17/2020. Every episode of BATWOMAN will be available to stream on CWTV.com and The CW App the day after broadcast for free and without a subscription, log-in or authentication required.

Supergirl s5e19 "Immortal Kombat"

DAVID HAREWOOD DIRECTED THIS PENULTIMATE EPISODE – Supergirl (Melissa Benoist) realizes that in order to stop Lex (guest star Jon Cryer) and Leviathan she must work with the one person she never thought she’d trust again – Lena (Katie McGrath). Nia (Nicole Maines) keeps dreaming about Brainy (Jesse Rath) but struggles with what the dreams are trying to tell her. Meanwhile, Brainy realizes there is only one way to stop Lex. David Harewood directed the episode with story by Derek Simon and teleplay by Emilio Ortego Aldrich & Nicki Holcomb (#519). Original airdate 5/17/2020.

Legends of Tomorrow s5e12 "I Am Legends"

STICKING TOGETHER – After drinking from Chalice, the Legends have immortality for 24 hours, which gives them time get to the Waverider and use the Loom of Fate. However, they quickly discover that the sisters have stolen the Waverider and they are stuck at Constantine’s (Matt Ryan) house in the middle of nowhere in London during a Zombie Apocalypse. Meanwhile, Gary (guest star Adam Tsekham) is left on the ship and once he discovers what is going on, he takes something important to the sisters. Caity Lotz, Dominic Purcell, Nick Zano, Maisie Richardson-Sellers, Jes Macallan, Tala Ashe and Olivia Swann also star. Andrew Kasch directed the episode written by Keah Poulliot & Emily Cheever (#513). Original airdate 5/19/2020.