Danielle Kennedy

Leslie (Amy Poehler) goes on a bus tour for the final day of her campaign, and is caught off guard when an important person in Pawnee passes away. Meanwhile, Andy (Chris Pratt) susses out a security threat, and Chris (Rob Lowe) finds an unlikely cure for his depression. Rashida Jones, Nick Offerman, Aziz Ansari, Aubrey Plaza, Adam Scott, Retta, and Jim O'Heir also star.

Leslie and Ben are criticized for taking part in a Pawnee tradition; Ron and April go on a scavenger hunt; Donna and Garry reminisce.

The BAU is called to Montana to investigate the case of three kidnapped and murdered women.

Frankie's sister, Janet (guest star MOLLY SHANNON), comes to the rescue and offers to help run the Heck household while Frankie studies for her dental assisting school finals. But the sheer amount of disorganization in the house throws perfectionist Janet for a loop. Meanwhile, when Cassidy's ex-boyfriend pays an unexpected visit from college, Axl tries to take the high road and not act like a jealous boyfriend; and Sue wants to legally change her middle name (which is also Sue) in order to have a normal name on her driver's license.

Beginning February 8, “Grey’s Anatomy” enters a three-episode story arc that will challenge the interns of Seattle Grace -- and "Grey’s" fans as well -- like never before. Elizabeth Reaser (Independent Spirit Award nominee for "Sweet Land") guest stars as a patient over multiple episodes.