Anna O by Matthew Blake

 This is quite the page-turner, replete with twists and turns. Anna Ogilvy is the 20-something daughter of a wealthy and successful London family, and a fledglng writer. One night, she reportedly kills her 2 roommates (supposedly while sleepwalking) then goes into a coma for the next 4 years, so she can't be prosecuted. Ben Prince is the psychologist chosen to try to bring her out of the coma. He is of two minds since he's not sure she's guilty and he knows if he does wake her up, she will go on trial. But he wants to see if his methods will work. Ben is soon obsessed with Anna and her case--and what happened the night of the murders. Soon events are spinning out of his control and life as he knows it is over. It's quite the compelling story.