Schneewittchen muss sterben

This is a fun slow reveal exposition that allows the viewer numerous opportunities to figure out not only the main mystery but also the relationships and past history of the characters. There are indeed a few events hat probably wold not have happened in real life - for example at one crime scene one of the witnesses must have left foot prints but the police don't find them - but this doesn't really distract from the enjoyment of puzzle solving. Some aspects of the two detectives character are developed in anticipation of later episodes in the series - the fact that these are not completely resolved in this episode is fairly standard for a multi-part series. Pretty much everyone in town is a potential suspect with a potential motive so unlike some puzzles where one has to figure out who could possibly have done it, this one is largely a puzzle of elimination.