Sowerbutt's Transmitter

As the minutes ticked by, Nero wondered where the spy was heading. He guessed the heavy backpack, that he could just make out in the moonlight, contained the transmitter. A transmission to Hamburg, a clandestine meeting or breakout and heading for the Irish ferries.
http://www.amazon.co.uk/Colour-Camouflage-Hitlers-Super-Spy-ebook/dp/B00HT48BN8