Reggie Watts returns to the show just in time to try to prevent a disaster; Weird Al has a surprising announcement; Adam Scott tries to give Scott some assistance.
Jody finds out that following your heart can lead to danger - will her friends be able to save her? Meanwhile, Ryan confesses his darkest secret.
When Rebecca tries to host a girls’ night with Paula, Heather, and Valencia, things don’t go as planned. Meanwhile, Darryl bonds with co-worker Maya and discovers they have more in common than he realized.
Todd Hoffman digs deeper than ever in a desperate search for gold. Tony Beets hauls a monster down the Yukon River. Parker Schnabel’s $600,000 wash-plant starts to shake itself apart.
Mr Khan has been spending quality time with Alia's 'friend who is a boy' Scab. They are getting on famously and, after a one-to-one chat with Alia, Mr Khan suspects it won't be long before there is another Khan family wedding on the horizon. But then Scab takes fright at the prospect of the Khans meeting his parents. The Khans believe it is because they are a bit snooty and object to the idea of having a Pakistani daughter-in-law. So Mr Khan and Amjad hotfoot it to the posh country club to confront Scab's father in a sweaty sauna and give him a piece of their minds.
The treasure hunters make a historic discovery in a cave system, but not one they expected, and a run-in with a jaguar leads to another revelation, but the new trajectory has tragic consequences for Captain Keith.
Mike gets to deliver a speech for a graduation ceremony at Mandy's business school, but he must adhere to a politically correct tone. Meanwhile, Cammy comes home and brags about her great college experience, which leaves Eve feeling lousy.
Dan Jones visits Lancaster Castle to explore its grisly history of crime and punishment, including the infamous Lancashire Witches trials and the martyrdom of the Jesuit priest Saint Edmund Arrowsmith.
The Guard helps two buffoonish Gorilla princes return to their home in the snowy Rwenzori Mountains.
Christy becomes overprotective and keeps a constant eye on 12-year-old son Roscoe after discovering he's been using drugs and alcohol.
Sheldon and Leonard try to divvy up their shared belongings, but can’t agree on anything. Also, Koothrappali and Stuart fight to be the most helpful during Bernadette’s final weeks of pregnancy.
The pups' hunt for berries is cut short when Everest is sprayed by a skunk.
Lucifer realizes that as rock star Vince Vincente, he can get his fans to do whatever he wants. Thrilled with this power, Lucifer arranges to play a secret VIP concert in order to kill all of them. Sam, Dean and Castiel enter the underbelly of the music industry to try to stop him.
Military veteran and grandma Line Pelletier and Brooklyn soul food chef Chris Scott try to school each other for a chance to get Bobby Flay beat. The Chew's Carla Hall is joined by two kids, 12 year-old Oscar nominee Quvenzhane Wallis and Modern Family's amateur food critic, Aubrey Anderson-Emmons, to decide who gets to put Bobby to bed.
Walter and the Bunker Hill surgeons must perfect a revolutionary remote surgery when someone on the International Space Station needs an emergency procedure.
After learning the Dominators’ plan for the world, the Legends must work together with The Flash, Supergirl and Green Arrow to kill them once and for all. Meanwhile, Stein figures out, with the help of others, how the team can terminate the Dominators, but is distracted by the aberration he realizes he created in 1987. The crossover starts on Supergirl S02E08 Medusa (I), The Flash S03E08 Invasion! (II) and Arrow S05E08 Invasion! (III).