End of Casefile#3: Joe Hardy saw Iola Morton die in a terrorist bomb attack. So he can't believe his eyes when he sees Iola, alive, running through the Maine woods. Is he seeing ghosts? But Frank and Joe find live villians- and high-tech horror- when they follow Iola to the Lazarus Clinic. It's a front for a power-hungry group, perverting science to evil ends. And anyone who investigates them dies! The Hardys face their most dangerous enemies yet, trying to stop a killing- and save Iola's life. Will they succeed?

Back of Book: Camped out in the Main woods, the Hardy boys get a real jolt when they glimpse Joe's old girlfriend, Iola Morton. Can it really be the same girl who was blown to bits before their very eyes by a terrorist bomb? Frantically searching for her, Frank and Joe are trapped in the lair of the most diabolical team of scientists ever assembled. Twisting technology to their own ends, the criminals create perfect replicas of the brothers. Now the survival of a top-secret government intelligence organization is at stake. Frank and Joe must discover the bizarre truth about Iola and face their doubles alone --- before the scientists unleash one final, deadly experiment.