Hollis and Hagen are laughed off by CID when they provide a tipoff on an upcoming armed robbery at a casino, provided by former getaway driver Jerry Mulligan, after he is arrested for stealing a milk float. However, it comes back to haunt them when a casino is robbed overnight, with Hollis wasting no time in mentioning CID's indiscretion to a furious Burnside. He tasks Lennox and McCann, on attachment to CID, with tracking Mulligan down. He provides info on another raid, so Burnside leads an undercover team there to catch the gang in the act, but Mulligan is attacked and the gang make a breakaway, leaving Burnside to pick up the pieces.