Mosley is best known for his detective fiction, but his philosophical novels combine concepts with tension. The result are fast moving, concept challenging plots which leave the reader something to return to on a second read. "Last Days" is an excellent example of this genre. While not quite at the level of his "Man in the Basement," Mosley plays with memory, racism, social structures, and the afterlife in the midst of a plot bordering on a mystery. Quick, excellent read.