A one-of-a-kind Greek chalice worth 1.5 million dollars is stolen in front of many witnesses.

Thoroughbred-owner Katherine Wells finished an interview at the track, then in confidence tells her horse trainer that she is quitting racing and sold her prized thoroughbred for $5,000,000. That after morning workout, the transfer would be official. Before new owner and camera crew, Oxford Dunn starts his quarter run.. yet a different horse finishes - with no time to switch in the "Horse of a Slightly Different Color." It's another impossible puzzle for Banacek.

A small but powerful prototype engine sits sealed in a rotating display case in the middle of a crowded trade-show floor. A power failure turns out the lights for a few seconds, and when the lights return, the rocket engine has vanished. Banacek must beat his competition to the solution before Federal agents step in.

A charter company jetliner makes an emergency landing at a small desert airstrip, blowing all of its tires and leaving a shaken flight crew. The next morning finds the pilot left guarding the plane dead and the airstrip empty of the immovable aircraft. Enter Banacek - in a chauffeur-driven jeep - to sort out the convolutions of pilots, stewardesses, old business partners and more to learn where the crippled plane has gone.

A stage magician vanishes in the middle of his act, as he is about to be arrested on suspicion of a $1,750,000 securities fraud. Banacek is called in to try to recover the missing money and solve the mystery of the disappearing man.