Joey attempts to find an ear, bitten off during a barroom fight. Joey finds out that his girlfriend hasn't been faithful. Mike and Erin fight about Donny staying with them. Mary agrees to seeing a marriage counselor. Paul gets a job working for his girlfriend's father as a trader. Joe is still tormented by Keefer about his affair with Ginny.
Joe is being blackmailed. Someone tells Mike about Joe and Ginny. Joey catches a murderer of a young Russian immigrant mother. Paul makes a delivery to a late night poker game. He stays to play, losing his job and winning $500 that his opponents cannot pay him. Mike wants to bring a foster kid he recently met, home, but Erin is against it. Erin feels like she doesn't want to be like Mary, so she decides she wants to go back to school. Mary talks to a priest.