Dangerous Transmission

ITD BE A CRIME TO LOSE THIS TOOTH While on holiday in London, Frank and Joe Hardy learn that a new inventiona voice transmitter that can be implanted in a toothhas been stolen. The prime suspect is a notorious spy who has recently been spotted in London, but shortly after the Molar Mike is stolen, the Hardys catch a trespasser in the lab where the transmitter originated. The suspect list is growin...