Suspicious of Weldon's motives, and his seemingly unstable mental condition, Crockett and Tubbs visit his former police partner Marty Lang (David Strathairn), who informs them that Weldon was discharged on medical grounds rather than having retired. He had painstakingly built up a case against Arcaro and suffered a breakdown when the drug lord walked free on a technicality. When the pair leave, they find that Weldon has followed them, and is both defensive and furious concerning their visit to his partner. However, he reveals that Arcaro's successor, Freddie Constanza, is to be killed that day on Arcaro's orders. All three reach the location of the hit in time to witness Constanza's murder, and Weldon is arrested on suspicion of involvement.
