Marnie is not OK. She's had x-rated thoughts for the last 3672 days and she doesn't know why or what they mean. When she jumps on a coach to London, she doesn't know a soul, not even herself, but in the city she will build a new life.
Twenty-four-year-old Marnie is witty, smart and 'normal'. Well, 'normal' apart from the relentless noise inside her head. For the past 3,723 days, Marnie has been experiencing a barrage of x-rated thoughts. Unbeknown to Marnie, she's in the grip of a remarkable form of obsessive-compulsive disorder - nicknamed 'Pure O'. After imagining her parents engrossed in an orgy at their 25th wedding anniversary party, Marnie packs a bag and leaves Scotland for London - desperate to find out what's wrong with her. A story of self- discovery, finding friends and learning how to love, Kirstie Swain's brilliantly funny, emotive series is based on Rose Cartwright's acclaimed biography.
