In "The Unusuals," it helps if a cop has a twisted sense of humor, because every moment could be your last. Just ask Casey Shraeger (Amber Tamblyn, "The Sisterhood of the Traveling Pants"), who started her day as an NYPD vice detective before unexpectedly being transferred to the homicide division. She quickly realizes that, not only does everyone in her new department have a distinct sense of humor, but also their own dirty little secrets.