General Zhuravlev fought on the fronts of World War II, and is now designing spacecraft. Sending a rocket with astronaut Borodin on the flight, he recalls the namesake of the astronaut - a young tankman whom he had the chance to meet on the roads of war ...
Roger Mills, a Harley Street specialist, is taking a sailing holiday on the Norfolk Broads. When his six guests find him at the tiller of his yacht with a smile on his face and a gunshot through his heart, all six fall under suspicion.