Old Geezers, The Back of Beyond

they thought it was all over, their malignant enemy captured or dead one hundred years back in time. but one thing was still left undone. the bomb in their future was still ticking away, and when it blew up the whole world would be destroyed. there was only one way to stop it. once more they would have to use the time machine, but their destination this time was germany. now there was not just one maniac to contend with, but a whole army.