Under the Blood Red Moon

From the back of the book:

Matyas in an old man. A long life of adventure has left him satisfied and ready to pass to the Arc of Time and meet his patron, Toth, the Shadow of the All Father. Satisfied, but for one last task. It is in his mind to make a final sacrifice to Toth by placing a magical parchment, reputed to hold the cure for lycanthropy, beneath an Alter Stone of the Temple of Toth. But this is easier said than done, for the Temple is over-run with evil and he is too old to undertake the task. So he turns to his kin, asking one to gather their friends and make this sacrifice for him!

For 2 - 4 characters, with a challenge level of 2nd - 5th