Allison Walker is an enigma. It seems that the bright young owner of Rain City Yachts has another side to her personality-one irresistibly drawn to the field of medicine. Allison is diagnosed with Dissociative Identity Disorder and committed to mandatory participation in a clinical trial at a prestigious psychiatric institute. But when she discovers her own misdiagnosis and the true source of her medical knowledge, she learns something even more disturbing: the institute's executives are hiding deadly side-effects from the FDA and Allison is the only patient left alive with enough knowledge to expose them.