Old debts are paid with a vengeance in this taut suspense drama. Left to take the rap in an insurance scam, a crook serves his time without ratting out his accomplice. Now he's out, and looking for the man who double-crossed him. But his old "friend" still has a few tricks up his sleeve!

A crew of Martians overhears a radio broadcast of Orson Welles' "War of the Worlds" coming from Earth, and, thinking the Martian fleet is attacking Earth, they land their broken-down ship in a backwater mid-American town. As luck would have it, they land on Halloween and get mistaken for trick-or-treaters. Comedy ensues as the Martians try to get taken seriously.