The group that ambushed the party in the stables of Pologia was led by Sarebus, a tiefling assassin. Upon interrogating him, the party learned that he was a member of the Auric Scholarship, and was hired by Professor Hartmann to kill the party to prevent …
Much of what the party knows of Hartmann they have learned from a letter he wrote to Ulbrecht, who was carrying it when he died. Hartmann apparently wants to keep Paulos from obtaining the focusing crystal he seeks.
Hartmann appears to be a Professor …