Trivia

Jack Palance was injured in a fight scene when John Terry's sword punctured his body. Palance didn't stop, and completed the take. Afterward, director Terry Marcel went over to see if Palance was all right. Palance cast any concerns aside, and continued with the shoot.

Ferdy Mayne, who plays Jack Palance's father, is three years older than Palance.

A sequel, Hawk the Hunter, was announced in January 2009. The tagline read, "The Slayer returns. The Hunt begins". However, it was never produced.

Patricia Quinn burned her hand stirring a magic cauldron when too much flash powder was used.

Bernard Bresslaw hurt his neck shooting the scene in which a nun drugs him, towards the end of the picture. As he fell, his armour dug in underneath his jaw.