In a sleepy, historical Iowa town, tourist season is in full swing, and the strangest serial killer the world has ever known is roaming at will.<br /><br />It begins with a house explosion, a severely burned man, and an unidentified female body. More victims follow, each bearing an identical wound and accompanied by eerie, musical ticking.<br /><br />When the lead homicide investigator goes missing, Police Sergeant Erin Vanderjagt is forced into the fray and a personal hell she never imagined. As the murders continue, what can Erin do, where can she go, how can she fight the horror...&nbsp;When the Tik-Tik sings?