During WWII, Lieutenant Commander Buster Crabb, was the Royal Navy's most daring expert in countering attacks by enemy frogmen. His most notable successes took place against Italian frogmen in the Mediterranean where he successfully led a team of British frogmen using underwater two-man 'Chariots'. After the war, he became surplus to requirements until Mr Kruschev visited Britain in a top-secret Russian cruiser. Whilst illegally inspecting her hull, in Portsmouth Harbour, he mysteriously disappeared. A year later, two, not one, headless and handless corpses surfaced near Portsmouth - was one of them Buster Crabb? Or were neither of them? Was he taken prisoner? - and if so, who did the bodies belong to?