CW Synopses April 9-12

The CW has released the newest batch of episode descriptions.

Legends of Tomorrow 3x17 "The Good, the Bad, and the Cuddly"

SEASON FINALE — The Legends plan to vanquish Mallus by using the totems doesn’t go as planned, forcing Rip (guest star Arthur Darvill) to improvise. The team finds itself regrouping in the Wild West where they run into their old pal Jonah Hex (guest star Johnathon Schaech). Sara (Caity Lotz) leaves Ray (Brandon Routh) in charge of watching Damien Darhk (Neal McDonaugh), while she comes up with a new plan. Meanwhile, Amaya (Maisie Richarson-Sellers) is determined to find a way to use the totems to destroy Mallus. Dominic Purcell, Tala Ashe, Keiynan Lonsdale, Nick Zano and Franz Drameh also star. Dermott Downs directed the episode written by Marc Guggenheim & Phil Klemmer (#318). Original airdate 4/9/2018.

The Flash 4x17 "Null and Annoyed"

DANNY TREJO RETURNS AS BREACHER; KEVIN SMITH DIRECTS — Barry (Grant Gustin) and Ralph (guest star Hartley Sawyer) take different approaches to finding the remaining bus metas before DeVoe gets to them. However, Ralph’s cavalier attitude frustrates Barry and the two clash over what it means to be a hero. Meanwhile, Breacher (guest star Danny Trejo) returns to ask Cisco (Carlos Valdes) for a favor. Kevin Smith directed the episode written by Lauren Certo & Kristen Kim (#417). Original airdate 4/10/2018.

Black Lightning 1x12 "The Resurrection and the Light: The Book of Pain"

RETURN OF THE WHALE – Tobias (Marvin Jones III) returns to Freeland. He is tasked to capture – not kill – Black Lightning (Cress Williams) with the help of an unexpected source. After a battle of epic proportions, Anissa (Nafessa Williams) and Jennifer (China Anne McClain) provide surprising aid. Christine Adams, Damon Gupton and James Remar also star. The episode was written by Jan Nash & Adam Giaudrone and directed by Oz Scott (#112). Original airdate 4/10/2018.

Supernatural 13x18 "Bring 'Em Back Alive"

DANNEEL ACKLES AND RICHARD SPEIGHT JR. RETURN – Lucifer (Mark Pellegrino) rules over heaven but things aren’t going exactly as planned, exasperating his first lady, Jo (guest star Danneel Ackles). Sam (Jared Padalecki) and Castiel (Misha Collins) are perplexed by the return of Gabriel (guest star Richard Speight Jr.). Meanwhile, Dean (Jensen Ackles) gets one step closer to finding Mary and Jack. Amyn Kenderali directed the episode written by Brad Buckner & Eugenie Ross-Leming (#1318). Original airdate 4/12/2018.

Arrow 6x18 "Fundamentals"

OLIVER IS VISITED BY A GHOST FROM HIS PAST — In his darkest place yet, Oliver (Stephen Amell) wonders if he has failed at everything – being a father, a mayor and a hero. His frustration rising, Oliver lashes out at Felicity (Emily Bett Rickards) and William (guest star Jack Moore). A surprising visit from an old friend has Oliver questioning his next move. Ben Bray directed the episode written by Speed Weed & Emilio Ortega Aldrich (#618). Original airdate 4/12/2018.