Fear Itself — Walter Mosley

Mild-mannered Paris Minton is delivered a pile of trouble when Fearless Jones shows up with a simple request: help find a beautiful woman's husband. Lending a hand gets him hit upside the head, hogtied, kidnapped, and threatened with a gun the size of a cannon. Now he's wondering whom he should fear more: the people he's looking for or the people he's working for. Tangled up with cops, rival millionaires, several corpses, and one of L.A.'s wealthiest women, Paris Minton is in a corner-and not even his invincible friend Fearless can save him.