Katherine Parkinson

Unorthodox, unpredictable, and verging on the unprofessional, Dr Berry is a deeply disturbing hypnotherapist. His experimental regressive technique is both strange and terrifying, and involves taking unsuspecting clients on unsettling journeys through their subconscious. Each episode sees him dealing with a patient who needs treatment for a particular problem. There's Karen House-Water, who's aquaphobic (and therefore afraid of half her own name);...