Rascher is a Luftwaffe doctor, infamous for the “high altitude” experiments he conducts on concentration camp inmates.
He [and his wife] will run afoul of Himmler when they steal infants from the camp and pass them off as their own [the Frau was beyond what was then considered the normal child bearing years]in an effort to impress the Reichsfuehrer SS.
Himmler has Rascher put against the wall and shot.
"Experiments" is the word that should be in quotes. From what I read in Shirer torturing people to death for fun because he can would be a more accurate description. I hope he had time to reflect on the irony of the situation while waiting to be shot.