Ivy tracks a secret project on which Wayne Enterprises is working and begins to target anyone that can give her information. Meanwhile, Jerome becomes obsessed with Penguin in Arkham. Also, Gordon begins to second guess his deal with Sofia and an unsettling dream sequence shakes up Bruce.

When Mateo gets injured, Jonah tries to help him keep his immigration status a secret; Amy attempts to convince everyone that she likes Kelly.

Maggie's relationship with Clive starts to progress, and she invites him over for a game night to meet Meredith and Amelia. Meredith and Jo meet with the owner of the patent to the polymer they need for their project, who coincidentally is a friend of the family.

Holden, Jeff and Charlie work to end Hollow Sky's threat to the Matthews family; Shoemacher uncovers a horrifying scene at Hollow Sky and disagrees with Yellow Jacket about the future of the organization; Tom has an unsettling encounter with Diego.

The queens' acting chops are tested in a girl comedy blockbuster scene. Democratic Leader Nancy Pelosi stops by the workroom, while Chris Colfer and Garcelle Beauvais guest judge.

Sam and Dean are close to collecting everything they need to open a rift into the Apocalyptic World and possibly rescuing Mary and Jack. The one missing ingredient leads the Winchesters to a black market for religious relics where everything is not always as it seems.

Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work.

Sheldon makes friends with an upperclassman who introduces him to a new field of science. Mary and George disagree on how to handle Sheldon's blossoming social life.

Jack reluctantly agrees to go out on the town with Mary, Stef, and Michelle; his superiority complex proves difficult for the women to overcome; principal Durbin feels threatened when Helen fills in for him on the school's morning announcements.

Bonnie locks horns with Jill's "inner strength" coach, Miranda. Also, Christy struggles to bounce back after being rejected from law school.

A baby shower makes Grace and Will question their life choices; Karen and Jack find a way to combine child labor with musical theater.

Zac Posen invites the designers into his personal studio to gather material for red carpet looks that showcase a signature technique. Zac Posen and Rosie Perez guest judge.

When Cyrus and David embark on a trip to Lisbon for the digital piracy summit, their plane is hacked, leaving their friends and colleagues on the ground little time to save them.

Oliver and Thea are shocked to hear that Roy Harper is back in Star City. However, when they discover the circumstances of Roy's return, Oliver and Thea realize that Roy is in trouble and jump in to save him. Black Siren makes a shocking decision.

The Cajun Cartel tries to tag out Texas hunters affected by Hurricane Harvey. Meanwhile, back in Louisiana, Jay Paul's reunion with an old friend leads to serious problems.

Jen and Greg decide to take turns dealing with her annoying parents when they come to visit. Also, when Tim and Heather chaperone Samantha's dance, Heather runs into an old flame; Colleen cashes in the many "love coupons" Matt has given her as gifts over the years; and Sophia digs up disturbing information when she investigates the family lineage.

Vince plans to sell his family-owned gym and move to Florida, but he is derailed when his high school fling, Priya, unexpectedly drops off their 15-year-old son, Michael, on his doorstep.

Annalise helps the "Keating 4" concoct a plan to prepare for another round of questioning after detectives get a break involving Simon's case. Meanwhile, Laurel discovers new details about the night Wes was killed which lead to a surprising confrontation,.

A cappella group members go head to head.

Trappin ain't easy, ya dig? Shout out to all my credit card scammers in the club tonight.

Hondo and the team go on the hunt for a serial killer who escaped justice two years prior by faking his death. Also, Hondo worries that Buck Spivey, the team's former leader, is spiraling into depression in the aftermath of being fired from the department, on S.W.A.T.

The road calls and Kerry considers taking a gig on a tour that conflicts with his wedding anniversary. When Rachyl informs Kerry that she is seriously considering law schools in other states, Kerry puts his foot down.

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Peter and Nance interact with celebrities on social media; Fred gives Carrie a rock n' roll remodel; James rides his bike to work; Gil and George say hello to Toni and Candace.

While working to track down a bombing suspect, Voight and Antonio meet with Chief Boden, who unwillingly agrees to let Dawson and Brett go undercover. As the investigation continues, Boden, Casey and Severide lend their skilled expertise in the investigation. Elsewhere, Kidd and Zach's relationship hits a bump and Cruz has a hard time expressing his true feelings for Brett. Meanwhile, Herrmann and Connie are forced to come up with an alternative solution when two birthday parties are booked on the same day at the firehouse.

The crossover starts on Chicago P.D. S05E16 Profiles (I).

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Stephen welcomes actress Mindy Kaling, journalist Chris Hayes, and comic Amberia Allen.

While Jessica deals with a rival PI and a paranoid would-be client, Trish digs up a medical file that could unlock the mystery of Jessica's powers.

Minatsuki gives the OK for the others to attack Koku, but Keith intervenes to protect him. The RIS receives an ultimatum.

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[Guilty Act] Dr. Daniel Harrow investigates the apparent suicide of a young woman whose grieving father suspects she was murdered.

With Tom's life under threat in prison, Hammond and Cole demand that kingpin Neckbone call off his dogs. All the while, the Ravens must hide the deadly truth about Sleep, both from Neckbone and the Feds. Hammond wields leverage over Agent Byrd, who is pulled ever tighter into the Ravens' grip.

Jamestown is spooked as ghostly happenings fuel rumours Samuel has risen from the grave. Reddick gets everyone battle ready as news comes in of a Spanish attack.

After a new discovery, Kendrick agrees to do everything in his power to reopen the case. Laura tries to warn Matilda that she is in grave and imminent danger, but Matilda is starting to have doubts about who she can trust. Hal's blossoming romance with Trudy allows him to reflect on his relationship with Matilda. He resolves to get to the bottom of the Penllynith mystery once and for all.

This episode includes the opening ceremony of the Winter Paralympics in South Korea. US musician and coach from The Voice Will.i.am is live in the studio.