Four men who have been friends since high school discover they're being blackmailed over the death of another childhood friend. When one of the four turns up dead, it's up to Nichols and Stevens to uncover the truth behind a 22-year-old mystery.

A government official blackmails two doctors for overcharging patients before he is killed. The doctors have another secret to protect, however, and worry that someone will find out mobsters financed their practice.