Being the third in line for command of the SS, Heydrich's car license plate was SS-3.
The real Moravec apartment was considered as a location but deemed too small for production needs. It was re-designed and built on stage 4 at Barrandov studios.
Detlef Bothe reprised his role of SS-Obergruppenführer Reinhard Heydrich, whom he previously portrayed in Lidice (2011).
Sean Ellis started to develop the project in the early 2000s after seeing a documentary covering the topic of operation Anthropoid.
Anthropoid means "resembling a human being in form".