Detective John Munch will retire on `` Law and Order : SVU '' Richard Belzer debuted the role in January 1993 . After 21 years of arrests with a side of wisecracks , Detective John Munch will retire Wednesday night on `` Law and Order : SVU . '' The actor who played Det.
Detective John Munch will retire on `` Law and Order : SVU '' Richard Belzer debuted the role in January 1993 . The actor who played Det.