#1 The Secret Ray, Parts One and Two: The 'Manitoba' No Reply; The Eruption of Karamako
ISBN: 9780951279953
Pages: 116
Year: 1994
Format: Softcover
Jo, Zette et Jocko,,, Les aventures de
#3 (1952) 
Le Rayon du Mystère 1er épisode, Le "Manitoba" ne répond plus (as The 'Manitoba' No Reply) (52p)
#4 (1952) Le Rayon du Mystère 2ème épisode, L'éruption du Karamako (as TheEruption of Karamako) (52p)
Jo, Zette and Jocko escape the undersea base in an amphibious tank, and end up on an island. But their problems are far from over. They have to deal with cannibals, modern-day pirates, gangsters, the media and there is still the mad scientist who wants them for his evil plans.
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