Calibre 38

The date that Arthur first looks at the new gun is noted as March 3, 1971, and this was a Wednesday. The next date given is October 26, 1971, which turned out to be a Tuesday, even though the pawnbroker actually says that it is Friday. The third date was Saturday the fourth of December, 1971, and this at least looks right, as the kids are not in school. The next date was the 16th of February, 1972. This was another Wednesday - exactly fifty weeks after the first date. The following scenes with Mr. Kelsey take place over more than one day. To note, Ramon Bieri, who plays Kelsey, was in the Hawaii police d'état (1968) about a gun that travelled through many owners, as the one here does. Over two and a half years later, the 20th of September, 1974, is a Friday. The next one, 13th November, was yet another Wednesday.

In a number of shots, the Smith and Wesson revolver used in this film is replaced with a fake prop gun that has a longer barrel and a differently shaped front sight.

Spin-off from Obsessions (1943)