PCs Dave Quinnan and Polly Page are searching for Shauna Russell, a young woman with Down's Syndrome who has been reported missing by her mother, Annie and sister Natalie. They finally find her in an underground car park but are concerned by her dishevelled state. Despite protests from Annie, her daughter is examined by the police Doctor, Sue Marton. Shauna complains of feeling sick and when gently questioned it soon becomes obvious that she is pregnant. A test confirms this and the Doctor tells DI Alex Cullen that Shauna is probably three or four months gone but is unsure how much of her condition she actually understands. It cannot yet be determined whether she was assaulted or the intercourse was consensual. The news of the pregnancy leaves Annie dumbstruck whilst Natalie is disturbed by the thought that her sister may have been raped. In interview Shauna is reticent but mentions John, a fellow member of a club she attends, whom she describes as rude. However, when Cullen meets John