The discrediting of a crime lab frequently used by the LAPD brings several old cases up for review, including one Provenza closed seven years ago with his former partner, Det. Andrews (special guest star Beau Bridges in a surprising role.) Andrews comes out of retirement to help with the case, but he isn't exactly prepared to testify in the new trial, throwing a wrench into a case that is already interrupting Brenda and Fritz's vacation plans.