" A Gadget is physicist's jargon for a nuclear device. A playful and harmless word for what we would call a nuclear bomb.
Jim Hawking, a minor physicist working in Hamburg, is kidnapped by terrorists who have collected enough fissonable material to make a big bang. To encourage Hawkins' co-operation they have also taken his wife and children.
Ultra-civilised living conditions and gourmet food did not make captivity too unbearable. And Hawkins had to admit that the technical challenge was fascinating... "

I want to read this before I release it.