Lisa Kleypas: Someone To Watch Over Me

She couldn't remember who she was...A temptingly beautiful woman awakens in a stranger's bed, rescued from the icy waters of the Thames, her memory gone. Told that she is Vivien Rose Duvall, one of London's most scandalous beauties, she finds herself under the protection of enigmatic, charming Grant Morgan. Her life is in his hands. Deep in her heart, she knows he has mistaken her for someone else...He was the only man she could trust. As one of London's most eligible and unattainable catches, Grant Morgan is a man who has known every kind of woman. And the one in his arms now seems so innocent, so vulnerable, that he can't help but be enchanted. And as his love for this mysterious beauty grows, he's determined to unravel the secrets of her past and discover the truth - no matter what.