Cats and Dogs

S2 E5: As she finds herself getting closer to a fellow clinical trial patient (guest star Hugh Dancy), Cathy (Laura Linney) worries about Paul's (Oliver Platt) commitment to finding a new job. Meanwhile, when Adam (Gabriel Basso) gets in over his head in an effort to ease his sexual frustration, he turns to his uncle Sean (John B. Hickey) for help.