The Dangerous Transmission

The Hardy Boys Mystery Stories

While visiting London, Frank and Joe Hardy investigate when the Molar Mike, a microphone and transmitter so small it can be hidden in a tooth, is stolen.

Part of the series The Hardy Boys Mystery Stories

Booko found 3 book editions

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Aug, 2012
New: $5.99

Apr, 2004

Jan, 1999
New: $14.97

Used: $13.53

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