This was the very last film distributed by Allied Artists Corporation (early in its life, Allied Artists was known as Monogram Pictures, and was responsible for all the Bowery Boys/East Side Kids films (under the monikers; Little Tough Guys/Dead End Kids, their films were released by Universal). Citing extreme financial difficulties, Allied Artists filed for Chapter 11 in late 1978, and the following year, their entire catalogue (including the Monogram films) was purchased by Lorimar/Telepictures Corporation (itself subsequently purchased by Time Warner, Inc. a decade later). Some TV prints of the Bowery Boys features, the WB 'shield' logo precedes the opening credits).

Fabio Testi's real voice is heard in the English language version.

The film's screenplay was co-written by Jerry Harvey, with Douglas Venturelli. Mr Harvey was the driving force for the legendary early (L.A. only) film cable channel (1974-1988), the Z Channel, which aired finds - rare, uncut, all at a time before VCR's (much less video stores and now digital). Z Channel's place in film history is documented in the film, Z Channel: A Magnificent Obsession (2004), by Xan Cassavetes, daughter of noted director, John Cassavetes, and actress Gena Rowlands.

One of the last spaghetti westerns filmed in Almeria.

Better known as a director and screenwriter, Sam Peckinpah receives an "introducing" acting credit although he had appeared in several films, albeit in small uncredited roles dating back to Dial Red O (1955).

Continuity

When Catherine initially stabs Mathew, she stabs him on his left side, the blade is horizontal. After the cut, the blade is vertical sticking out of the center of Mathew's upper back.

When Matt first meets the gunfighter he tells him to keep his hands up. As the shots cut from each perspective his hands go up and down several times.



Revealing mistakes

Clayton and Catherine are eating dinner in a hotel dining room. Clayton tells her that he is a gunfighter and she is a woman between husbands. The shot returns to Catherine who is sitting in a different setting (her hotel room), but answers as if the conversation was continuous.

When Catherine hits Mathew over the head with the rolling pin, the rolling pin bends in the middle showing it to be made of rubber.

After the Sebaneks "rescued" Catherine and were settling down for the night, Matthew tossed a white cup at Johnny, which bounced and landed by his left leg. Johnny then picked it up and sipped from it.



Miscellaneous

After Matthew had soundly beaten Catherine about the face and she meets up with Clayton, there is no bruising or marks on her face at all.