The Sleepwalker is the newest release by bestselling author Chris Bohjalian.  Bohjalian is a master at creating tightly written novels that are both haunting and mysterious at the same time, and Sleepwalker is no exception.  The book revolves around the very interesting concept of sleepwalking and its profound effects on both the afflicted and their families.  He weaves a compelling mystery around a New England mother and sleepwalker that goes missing and the heartache her family endures while trying to piece together the events leading up to and surrounding her disappearance.  The scientific and emotional perils of sleepwalking are carefully explored.  As always with Bohjalian’s books, the ending is both surprising and satisfying.  Highly recommended for readers of psychological thrillers, mysteries, and Jodi Picoult fans!Reviewed by Amy Churchill