The fourth season of NYPD Blue premiered on ABC on October 15, 1996, and concluded on May 20, 1997.
Actor Character Main cast Recurring cast Jimmy Smits Bobby Simone entire season Dennis Franz Andy Sipowicz entire season James McDaniel Arthur Fancy entire season Nicholas Turturro James Martinez entire season Sharon Lawrence Sylvia Costas credited in all but only appeared in 1, 7, 11, & 15 Gordon Clapp Greg Medavoy entire season Kim Delaney Diane Russell entire season Andrea Thompson Jill Kirkendall episodes 6–8, 10–14, 17–18, 20
Episodes
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