Trivia: The Beast Must Die
- Billing Displacement: Peter Cushing got the top billing over Calvin Lockhart in the video releases.
- Same Language Dub: Marlene Clark (who plays Caroline) was dubbed by Annie Ross.
- Similarly Named Works: There is also an unrelated novel named The Beast Must Die.
- What Could Have Been: Robert Quarry and Shirley Bassey were originally stated to play Tom and Caroline Newcliffe.