Speak to Dr Dampf in the secret lair

-he will teleport you to the Rookery

-Find the werewolf (marked on the map)

-speak to Anton

-Find the notes

-check the werewolf corpse as you are heading to the south east section of the Rookery

-kill the werewolf hunters located at the very South east section of the map. The named should drop an item.

-return to Dr Dampf