Plas's first assignment as a G-Man takes him north to the Hadley Lumber Company, which was for sale......but whose lumbermen were turning up dead left and right. Further investigation revealed a boneyard in the forest which was protected by killer trees! The trees were the creation of a mad scientist who'd successfully engineered animals to be plants, and vice versa. Thinking he would die in an ensuing forest fire, Plas revealed his secret identity to the scientist's henchmen, who he later saved and allowed to go free if they would keep his secret.; A masked blackmailer named Sexton, disguised as a Policeman, is taken down by Manhunter.; Roy decides to help Jean's Aunt Sophie, fearing that she has purchased a haunted house. However, Roy discovers that her Uncle is the one behind the "haunting" of the house, in order to prevent the purchase by his wife.; Destiny discovers that his powers are more powerful than he first suspected. As he was sleeping, his trance-like mind also sensed a murder and he is transported to the home of Sherlock Doyle.; Sandra, Don, Jake and Heidi head out on Jake's new runabout named "The Fire-Eater", and while Sandra is aquaplaning, another boat comes alongside and attempts to kill her. Later, she discovers that her father had been busting up their bosses' rackets and he wanted revenge.