Solid, likable Lt. Frank Hastings (Victims, etc.) returns, this time investigating the late-night stabbing--in a posh Pacific Heights home--of rich, kinky S.F. public-relations man James Henry. Haney's gorgeous wife Katherine claims to have seen a black burglar escaping just after finding her husband's body. And, indeed, some stolen items are later found several blocks away. But Hastings suspects that Katherine--who admits that she and Haney had a loveless ""open marriage""--is hiding something. Likewise, he doubts the story told by 16-year-old Amy Miller, the sex-kitten babysister who stayed with Katherine's pre-teen daughter, Maxine, earlier that night. And he wonders how much of the shadowy goings-on little Maxine (now catatonic) actually witnessed. Despite Wilcox's worthy attempts to divert attention elsewhere, many readers may quickly zero in on the dark truth about Haney's murder. Still, Hastings and his colleagues are believable, quietly engaging cops; and suspect Katherine, whose viewpoint (with key omissions) frequently dominates, is an oddly sympathetic mystery-woman.