Dale and Laura Corey are a happily married couple who own an electronics store; he does a lot of electronic eavesdropping for clients, she was a cop on the force with Cannon a few years back, and hires him because Dale is being threatened after bugging some hotel rooms for the owner.

A cop feels guilty over a man he injured.

A blackmailer's murder brings his Swiss wife to America, and Cannon discovers still more dealings.