Season 2: Episode 11

"Fight Or Flight"
With Sean missing after his tragic circumstances became too much, Cathy enlists Adam to search the city's streets and alleyways. As Cathy pushes Lee to enter another clinical trial, Adam's search for his uncle leads him to make friends with Sean's homeless "tribe." Meanwhile, as she worries about Andrea's poor showing at school now that she and Myk are having sex, Cathy runs into Dr. Sherman at a high school swim meet. And though she does her best to avoid it, she accepts an invitation for her and Paul to join Dr. Sherman and his sexy younger wife, Gia, for dinner.

Still fuming over his disturbing scale readings, Paul redoubles his efforts to get into shape, especially after a female employee out-lifts him at work. With an all-night inventory on the schedule, Paul worries that he won't be able to keep up, especially now that Mandy, his stronger co-worker, won't stop taunting him. So when Myk reveals that one of their "customers" paid for stolen goods with cocaine instead of cash, Paul decides to take the drugs to help him stay awake. Meanwhile, after another misunderstanding nearly causes their breakup, Andrea is surprised and happy when Myk asks her to get married.

Following his all-nighter at work, Paul discovers that Cathy found the cash he's getting from Myk. With their disagreement over the ill-gotten gains looming large, Cathy and Paul head to the Shermans'. But as Cathy is pressing the doctor for alternatives that might help Lee, a phone call from Adam sends her and Paul hurrying off to indentify a dead body that the police suspect is Sean, only to discover that it is a false alarm. So as Adam learns some painful and expensive lessons about life on the streets, Andrea surprises Cathy with both a completed overdue homework assignment and the news that she's engaged to Myk. Finally, in the wake of her conversation with Dr. Sherman, Cathy uses Paul's money to buy Lee a plane ticket to Germany for an experimental cancer treatment. But when Lee turns on her and refuses the generous offer, Cathy decides to use the money for a family vacation in Italy instead.

Cast
Laura Linney as Cathy
Reid Scott as Dr. Todd
Oliver Platt as Paul
Joseph Urla as Manager
John B. Hickey as Sean
Faith Sandberg as Server
Gabriel Basso as Adam

Directed by: Craig Zisk
Written by: Cara DiPaolo & Melanie Marnich