Detective Stu Morrissey (Conor O'Farrell) thinks that a father knows more than he's letting on about a missing baby. Medavoy (Gordon Clapp) makes a bet that he can lose more weight than Sipowicz (Dennis Franz). Martinez (Nicholas Turturro) campaigns to be elected the squad's union delegate. Bobby Simone (Jimmy Smits) has a run-in with Henry (Willie Garson) when a woman is killed outside the building Simone inherited from Henry's aunt. And Bobby and Dianne Russell (Kim Delaney) talk over their relationship. ~ Hal Erickson, Rovi