Unraveled (Elemental Assassin, #15)

"I might be the Spider, the city's most fearsome assassin, but all my Ice and Stone elemental magic hasn't done me a lick of good in learning more about 'the Circle.' Despite my continued investigations, the trail's gone as cold as the coming winter. So when Finnegan Lane, my foster brother, gets word of a surprising inheritance, we figure: why not skip town for someplace less dangerous for a few days?"--Page 4 of cover.