Dirk is in the frame when two of his former clients are killed and plans to skip the country though he is waylaid when Melinda Fulstone asks him to identify her stalker - actually Dirk himself conducting an experiment. Dirk believes the murderer is Robbie Glover, whom he accidentally had convicted for killing his own brother - particularly when Robbie tries to strangle him. But soon Dirk works out that Robbie has been framed and that there is somebody nearer home with a grievance against him.