O Negative (signed)

Paddy and Tess are on the road trip from hell.

After the war, all Paddy wanted was playing music. Now, he can't even pick up his violin. His muse comes in the form of the mysterious Tess who trades inspiration for his precious blood. Together, they go on a journey to the caves of Cruachan and beyond, the others always on their trail.
Will Tess be able to keep Paddy from the horror and betrayal her world holds?