The title "Tempelräuber" (temple robber) is explained by Klemm: Illegitimate children of clerics are pejoratively called this way because they "steal the priests from the church", because their fathers have to resign when the existence of their offspring becomes public.
At the dinner scene with Steffen and Karin Ellinghaus, Prof. Boerne tells the story of Thiel pursuing a suspect on a graveyard and accidentally falling into an open grave. This refers to the previous episode "Ruhe sanft!" (episode 659), but it was Boerne himself who had this misadventure.