Move Underground by Nick Mamatas

The year is nineteen-sixty-something, and after endless millennia of watery sleep, the stars are finally right. Old R’lyeh rises out of the Pacific, ready to cast its damned shadow over the primitive human world. The first to see its peaks: an alcoholic, paranoid, and frightened Jack Kerouac, who had been drinking off a nervous breakdown up in Big Sur. Now Jack must get back on the road to find Neal Cassady, the holy fool whose rambling letters hint of a world brought… (more)