A random Dublin shooting?
Two American's murdered in the back of a taxi. It appears random...until US Marshal Jack Dillon recognizes one of the victims.

An Ace of Spades in the victims mouth?
Someone's seen too many movies. At least that's the thinking until the card appears in another victim, and another, and another one after that, and...

Fortunately they have a suspect...
But then there's another murder he couldn't have possibly done. Somethings awfully wrong and it's up to US Marshal Jack Dillon to find out what's happening, and fast!