Czechs search for dead ‘heroes’ who killed SS chief Heydrich

The assassination of Nazi police chief Reinhard Heydrich by Czechoslovak resistance fighters in 1942 was one of the outstanding feats of daring in World War Two.

A new thriller called Anthropoid premieres in the US on 12 August, dramatising the ambush by British-trained Czechoslovak paratroopers Jozef Gabcik and Jan Kubis in Prague.

Yet even today parts of the story are shrouded in mystery.