A reformed junkie's murder has Andy fearing that the father of a victim from a long-closed case may have exacted an 18-year-old revenge. Meanwhile, Clark is rattled by a visit from Jen Devlin, who has obviously decided to go off her medication. Peeler: Bruce A. Young. Ronson: Jessalyn Gilsig. Simon: Dakin Matthews. Devlin: Chandra West.