The Invisible Detective Double Life Author:Justin Richards London 1936: The Invisible Detective's young crimesolvers are on their strangest case yet: Automated puppets from a traveling exhibition have begun replacing real people. Who is the puppet master behind these sinister abductions, and what has he done with the victims? Can the gang stop him before he completes his dastardly plan? — London, today: ... more »When Arthur Drake ducks out of the rain in a dusty antique shop, the last thing he expects to find is the casebook of the Invisible Detective. It may have been written in the 1930s, but amazingly, it's in his own handwriting.....« less