On his first task back in the field, Terry busts a steroid ring, and in doing so, takes cues from Jake on how to harness his emotions. Meanwhile, Amy and Rosa help solve a breaking-and-entering case at Gina's apartment.

When a drunk driver knocks down a transformer, the entire neighborhood is left without power on a frigid Chicago night and members of Firehouse 51 step up to lend their much needed help. While many from the community ride out the night at the station, in the midst of such close quarters, romances speed up and tempers flare. Meanwhile, Casey continues to lie to both himself and Dawson about his condition and the stakeholders in Molly's bicker about the bar's direction.

Jules and Grayson receive a wedding invitation from a couple they barely know and on a date that conflicts with Grayson's roller-hockey finals. Despite Grayson's important plans, Jules simply cannot say no. Meanwhile, Bobby finds out that Dog Travis has puppies, and the crew discovers that Tom has created a model of the neighborhood with eerily lifelike dolls of everyone.

The challenge is to create out-of-this-world alien creatures that are afflicted with interplanetary ailments.

Raylan is king for a day in the seized mansion of a notorious mob accountant, while Boyd tries to regain his stranglehold on the Harlan heroin market.

From "Brooklyn Nine-Nine", actor and comedian Andy Samberg; from "That Awkward Moment", actor Michael B. Jordan; musical guest Ellie Goulding.

Nick struggles to throw Jess the perfect birthday party, while Schmidt works overtime to help out Cece in her new job as bartender and Winston and Coach engage in a bake-off.

Shana returns to Ravenswood to tell Emily that she has a message from Ali, but can Emily and the girls trust Shana with all that they know about her? And when Shana ups the stakes and says that Ali wants to meet Emily - and only Emily - could it all be part of an "A" plan, or is Emily really Alison's favorite? With Emily becoming more hopeful by the minute, Spencer is determined to not let her friend get hurt. Meanwhile, Aria and Hanna deal with matters of the heart.

Looking to reclaim his place as King of Hell, Crowley asks Dean for help finding "The First Blade," the only blade that can kill Abbadon. Knowing he owes Crowley a favor for helping Sam, and also wanting Abaddon dead himself, Dean reluctantly agrees and the two set off on a road trip. However, Dean and Crowley are completely unprepared when they find out who has the blade - Cain, the first son. Meanwhile, Sam is back at the bunker with Castiel who notices there is some leftover grace inside Sam. If they can extract it, they can use the grace to track Gadreel. The only problem is the procedure may do permanent damage to Sam.

The contestants meet with stylists Tim Gunn and Ken Paves to get new styles for their new looks.

cOlbert's Book Club begins with a primer on Ernest Hemingway, Michael Chabon talks "A Farewell to Arms," and Mariel Hemingway discusses her grandfather's romantic side.

From "Tusk", actor Justin Long; from "Sullivan & Son", actress Valerie Azlynn.

After Cliff breaks up with Mindy for lying about seeing Casey in Los Angeles, Mindy is more determined than ever to win him back. However, instead of taking Mindy to the airport, Danny tricks her into going with him to the desert to see his dad.