ITâD BE A CRIME TO LOSE THIS TOOTH
While on holiday in London, Frank and Joe Hardy learn that a new inventionâa voice transmitter that can be implanted in a toothâhas 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 growing, and thereâs little time to spare.
To catch this wily criminal, Frank and Joe need to hunt all over Londonâfrom back alleys to the Tower of London. With new suspects popping up at every turn, and disaster threatening the teens, can they manage to sink their teeth into the crook before itâs too late?