Kenan Leach was mad clear through . . . Robbed by his partner, betrayed by his wife, he had no reason to stick around San Francisco any more. For a fact, there wasn't anything better he could do than set out to trail his old partner, Nate Morgan. There was money in it -- maybe -- and if Leach had anything to do with it, there'd be blood too. He didn't much care whose, either. . . ....