The new superb thriller from the highly acclaimed author of last year's success, Improvising Carla; Carol's curiosity about her husband's role in the unsolved murder of his friend years ago leads her to become involved with a sinister cult headed by the man who has always been regarded as the main suspect. She allies herself with Tim, who is desperate to free his mother and son from the cult's malign influence, but as she penetrates the heart of the mystery and is herself threatened by evil, she is forced to question all her most fundamental beliefs.