Data collected from clinical populations indicate that magical ideation (MI) may play a causal or a mediating role in the expression of obsessive compulsive symptoms. If this is the case then when targeted in treatment, symptoms of obsessive compulsive disorder (OCD) should be altered. Two individuals diagnosed with OCD received a trial treatment targeting magical thinking. The intervention consisted of a series of procedures designed to undermine superstitious/MI without targeting obsessions or compulsions. The procedures involved critical analysis of the following material: (1) a free astrology offer; (2) a horoscope prediction exercise; (3) a description of four different cultural explanations of the origin of fire; (4) an instructive guide for Tarot card readers; (5) a report of a UFO sighting; (6) a video-clip describing a cult festival; (7) a description of a ‘hoax’ channeler and (8) a superstition exercise. Measures of obsessive compulsive symptoms, superstition, MI and thought–action fusion were administered pre-treatment, post-treatment and at 3 months’ follow-up. According to the twofold criterion of Jacobson et al. (Behaviour Therapy 1984, 15, 336–352), following treatment the patients were identified as being recovered on measures of magical and superstitious thinking and on the Padua Inventory.