Grey and Eddie's latest case involves a man named James Edwards, who claims he can communicate with the dead. Things turn grave when the expert they hire to disprove the psychic's ability turns up dead. The investigators must prove that Edwards murdered him to keep from being discredited, or Lime Street will have to pay him $3 million.
As a publicity stunt, a novelist writes a book containing clues that can lead readers to a real life treasure. Eventually, a reader discovers the location of the buried loot, but when the treasure chest is opened amidst a flurry of reporters and news crews, the only thing inside is the body of the writer. Grey and Eddie must hunt down the killer and retrieve the treasure or Lime Street will have to pay off the contest winner.
The cockpit crew of a 747 stage a hijacking in order to extort four million dollars from their airline, then plant evidence that points to D.B. Cooper. Grey and Eddie see through their plot, but to prove their case they must first figure out how the crew got the ransom off the airplane after it landed and was beseiged by FBI agents.