Le mystère des 13

This movie spent a long time on the shelf. Filming was completed in the early part of 1966, but its American release was not until late 1967, and its British one not until the spring of 1968. David Hemmings made this movie before his breakthrough role in Blow-Up (1966), and it is quite possible that the great (and unexpected) popularity of that movie was what finally pushed MGM into releasing this one. Many commented with surprise on the smallness of Hemmings' role - it is likely that his special billing, along with that of Sharon Tate, was an afterthought to disguise the fact that they had supporting parts. Although this movie was supposed to launch Tate, she had, because of its protracted shelf-life, already been seen in Comment réussir en amour sans se fatiguer (1967), which she had made subsequently. That movie has a special "introducing" credit for her as a result.

David Niven's character, Philippe, goes to a vineyard to inspect grapes, wearing a blazer with a button-down oxford underneath. After a cutaway scene to a different character, the view returns to Philippe in the vineyard. He is still wearing the same oxford but now he has a covering sweater-vest on instead of the blazer.

The Turner print has the main title as "Eye of the Devil" but the ending credit lists the title as "13".

The "Turner" print uses "Eye of the Devil" as the main title; but, the end credit lists the title as "13". This print has a running time of 95 minutes.

Edited into Inside the Manson Gang (2007)