S4, E1: Tyrannical company president Hartley Bassett returns from the dead after two years. His first act is to fire Peter Dawson which makes Dawson the prime suspect when Bassett is found dead with two bullet holes in him. Perry thinks he has an ace in the hole this time when Dick Hart and his new wife, Teddi, both swear they saw a different assailant at the scene of the crime. Then Teddi and Dick disappear.