One of Duke's accounts, Gulf Coast Transport, has suffered losses of $100,000 thus far from hold-ups of their armored trucks. Duke co-assigns the case to Mike, as the man to who Duke initially assigned the case, Harold Kemp, has turned up nothing. Harold is Mike's old friend, colleague and mentor, with who he used to work on cases, so working together will be like old times. While Mike considers Harold one of the best in the business, he also notices that Harold is not as sharp as he used to be. During the most recent hold-up, one of the guards, Frank Glendon, an ex-military man and hero, shoots the hold-up man, ex-con Neal Porter, dead. Based on the shooting, Mike believes Frank purposely killed Neal, there being a personal connection between the two, and thus part of the team behind the hold-ups. Mike assisting Harold however does not prevent another successful ambush on one of the armored trucks. As such, Mike begins to suspect that Harold is involved, the tired old investigator ...