Monty Is Innocent is an ‘anomaly’ in the famous Monty Mole series of games, from Gremlin Graphics.
Monty Is Innocent wasn’t designed or programmed by Pete Harrap, the original creator of Monty Mole, but by Chris Kerry (who pitched the idea to publisher Gremlin after having a hit with his game Jack and the Beanstalk). Gremlin liked the idea enough to green light the game and eventually release it as Monty is Innocent in 1985.