The inaugural run of the trans-continental 'Supertrain' an atomic-powered express with facilities befitting an ocean liner, is marked by intrigue when a mysterious assassin makes repeated attempts on the life of a passenger.

A deranged man(Dick Van Dyke) plans to repay a kindness by killing the estranged wife of his benefactor. -TV Guide February 10-16, 1979

A presidential candidate is secretly abducted by his indentical twin-a man anxious to pose as his office-seeking brother. -TV Guide Feb 24-Mar 2, 1979

Bankruptcy isn't the only prospect for a down-on-his-luck Hollywood producer. The mob's angry because he hasn't delivered a film package with the promised female lead-his ex-wife. -TV Guide

A young reporter(Paul Sand) falls for a mysterious passenger, unaware his new acquaintance is being stalked by assassins. -TV Guide June 9-15, 1979

Supertrain's newest crew members (Joey Aresco and Ilene Graff) attempt to track down a jewel thief who has stolen a socialite's necklace. -TV Guide April 14-20, 1979

A bashful doctor finds himself rooming with an heiress who is hiding from kidnapers. -TV Guide April 7-13, 1979

Supertrain's latest promotion, the International Poker Championship, is dealt a bad hand when one of the participants buys in with counterfeit money. -TV Guide April 28-May 4, 1979

Barry Gordon and Rue McClanahan guest star in a bizarre comedy of errors about a weak-willed young man who holds some Supertrain passengers hostage while trying to plan his escape from the police.