Buy Bevoor's book. It was not as good as his work on the Battle of Stalingrad (Enemy at the Gate) but it was a top notch read and he goes into some detail of the Werewolves myth and how it hurt ordinary German civilians because the Soviet soldiers thought it was true and would kill thousands of civilian survivors based on mere suspicion (like a dead son's uniform in a closet would get the family in the house shot).
When the shooting stop there was no recorded act of these Werewolves in Russian territory. General N.E. Berzarin's death if not an auto accident was probably a hit by Stalin according to Beevor. Beevor gives the reason why Stalin would want Berzarin killed but I don't remember it. In fact he probably did die in an accident without foul play like Patton did. Germany had no traffic system at the time that would regulate traffic and slow down road accidents.