Ace High (Italian: I quattro dell'Ave Maria, literally translated as "The Four of the Hail Mary", released in the UK as Revenge in El Paso) is a 1968 Italian Spaghetti Western film directed and written by Giuseppe Colizzi and starring Terence Hill, Bud Spencer and Eli Wallach.

I Don't, ended with Cat and Hutch driving away in a wagon in which they possessed the gold from a train robbery by Bill San Antonio, who had apparently died in a dynamite blast.

He then pays a visit to the bank manager and reminds him that he and two others put him in jail for 15 years, and on his release framed him for murder with a stolen knife - the same one that was used to kill the deputy.

While Cat is lured away looking for him elsewhere, Caco, playing a joke on Hutch, appears before him and, in a quieter place, tells him about Harold and the other two "friends" who shot his horse so he got caught after a bank robbery, and then framed him for murder.

After some pillaging by his men, Canganceiro starts another kangaroo court that executes people for "fighting for country and freedom", and Cacopoulous is jailed until he tells where his treasure is.

Caco attempts to escape by lulling the guards to sleep by telling the story of his heritage: his grandfather was a Greek who married a young Cherokee woman, and his father was one of their children, how his father raised his family in a small mining town until he was mysteriously murdered, and how his grandfather, carrying little Caco, had to take his own son's body back to his own tribe.

In Memphis, they find Caco washing dishes in a saloon, together with the acrobat and assistant – because in this town people are only interested in gambling, substantiated by the fact that Cacopoulos has lost all his money while he was looking for Drake, the third "partner".

They put up Hutch to win money in a prizefight, buy weapons and give the rest to Cacopoulos with instructions for him to show up with them in the casino tomorrow.

The opposing parties wait for the roulette ball to stop, while the customers lie down on the floor and a Viennese Waltz (suggested by Cacopoulos) is played.