Three deaths, one connection-the anonymous calls all three women reported in the weeks before they died. Detective Tony Marino wants to close this case before another woman disappears. Especially when he meets a fatherless little boy whose mother is being stalked. Single mom Erin O'Malley tells Tony about her anonymous caller's heavy breathing and unnerving silences. And the feeling of being watched-constantly. Now, after years of thinking he had nothing to offer a wife and child, Tony will do anything to protect the family that feels like his own. Because Erinisnext on the killer's list.