During a search at a local sporting club, Eric meets Laura, a museum guide as well as Martin Ruysdael, a former diver turned psychiatrist and Laura's doctor/friend. Eric begins to have eyes for Laura and she begins to like him too. Meanwhile, that night, a salvationist and a young woman on a gumboat the next day are the next victims of the killer. As Eric begins to get frustrated with nothing turning up, he and John eventually think they find a suspect in a former chemical plant employee known for his violent outbursts. When the suspect is caught, Eric begins to have doubts. When he sees Laura that night, a skipper at the nearby dock is the killer's next victim with the boat sinking.