Patrick Brammall Detective Cullen Actor, Executive Producer, Writer Tim Meadows Detective Tolbeck Actor Dylan McDermott Clint Guest Star Jason Mantzoukas FBI Agent Dustin Kasprowicz Guest Star Keegan-Michael Key Officer Charles Brock Guest Star Beth Behrs Lieutenant Sophie Beyers Guest Star Joe Keery Guest Star Jake Johnson Josh Haldeman Guest Star J.K. Simmons Leon Guest Star Sunita Mani Fatima Guest Star Amy Schumer Guest Star Angus Sampson Chief Guest Star Amy Sedaris Janice Guest Star George Basil Gary Guest Star Paula Pell Guest Star Will Ferrell Executive Producer Adam McKay Executive Producer Trent O'Donnell Executive Producer, Writer, Director Jason Burrows Executive Producer Joe Farrell Executive Producer Nina Pedrad Writer Steve Toltz Writer Nasim Pedrad Writer