Rose Marlowe is a hard-working nurse, a loving wife, and a merciless killer...or so she says. Despite her confession, it is hard to believe that this beautiful, kind woman could have killed her vulnerable patient in cold blood. Down-on-his luck author and ex-journalist, Theo Hazel, is convinced that there's more to what happened than Rose is telling, and so decides to visit her behind bars to write her story. With each new visit, he becomes more and more convinced that she can't be a killer. But is he falling prey to a calculating murderer?