Changes (The Dresden Files, #12)

by Jim Butcher

I thought it made me look like some old-school German character from Golden Age Hollywood with a dueling scar on his cheek.

“So, no tracking spell for him,” I said. “But what about Maggie?” she said. “I know you don’t have any hair or anything from her, but you pulled a tracking spell for me using my mother’s blood, right? Couldn’t you use your blood for that?” I kept my breathing steady, and prevented the flash of frustration I felt from coming out in my voice. “First thing I tried. Right after I got off the phone with Susan when this all started.” Molly frowned. “Why didn’t it work?” “I don’t know,” I said. “Maybe it’s because there’s something more than simple blood relation involved.

Maggie isn't his daughter! Susan is double crossing him! “I was wrong”