The Demon of the Deep

The Demon of the Deep

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1st book in The Real Adventures of Jonny Quest series.
The Quest team are cruising the ocean and photographing the giant squid. 
Dr. Quest and Hadji lose contact with the surface while down below take photos. Jonny goes to find out why and discovers they are captives of a mad Nazi Commander on his sub that doesn't know that World War II has been over for 50 years.