In 1942, parachutists Jozef Gabcík and Jan Kubis are dropped into Nazi-occupied Prague with orders to kill Reinhard Heydrich, one of the most feared figures in the Third Reich.

Heydrich oversees the Nazi secret services and helps design the machinery of terror across occupied Europe. The parachutists' mission, known as Operation Anthropoid, depends on secrecy, courage and the support of an underground resistance network. Moving between cramped Prague safe houses and the corridors of power in Berlin, HHhH traces the careful planning of the assassination and the tense days that follow.

Grounded in real events during the Second World War, HHhH is a panoramic work of historical fiction that tells a story of heroism, loyalty, revenge and betrayal.