Their first official movie Spencer and Hill stared in together, a classic spaghetti western. Ironically it was Hill who started out as the harsher character while Bud played the more amicable guy.
It was an entertaining enough movie, but if you're looking for the humourous slapstick comedy we have come to expect from these guys, you won't get it. Unlike "They call me Trinity", it's a very serious Western with little in the way of humour, although I do find the shoot outs amusing as the guns seem to fire off more like cap guns than real guns.
What intrigues me here is the voice dubbing. Bud was dubbed by the man who was to do his voice in most of his movies; Glauco Onorato. Hill usually did his own English voice dubbing, but in this one he has someone else doing his voice, a much colder and harsher voice to match his character. I guess it's not surprising that they needed to do that, otherwise his character, Cat would just not have the same menacing aura to him. Perhaps for the same reasons Bud is normally voiced by Glauco.
This was the first in a series of three movies using these two characters.