In pentothal prose, Denker (Error of Judgment) returns to the medical circuit, this time focusing on lovely Dr. Christine Warfield, professor of neurology at University Hospital in a D.C. suburb. Although she has "striking regular features," Chris' "intelligence supersedes her beauty, color and style" when she's in her white lab coat--and she has two cases here to keep her beeper tweedling. There's famous violinist Josef Benders, who needs surgery for a brain tumor--but Josef's protective mother Molly (a deathcamp survivor) apologetically chooses to ignore Chris' warnings and picks a surgeon who works through tiny apertures in the skull rather than sensible wide ones: after surgery, Josef is soon brain-dead, and Chris has a wearying time seeing to it that, for Molly's sake, the plug is pulled. And then there's physicist/spy Gilbert Hopkins (his late wife was Chris' college classmate), who got a bullet in his head when a Russian secret-information source was assassinated: Chris' job, amid government hassling, is to bring Hopkins back from coma and memory loss. . . while comforting Hopkins' 15-year-old daughter Alice. Furthermore, throughout all this, Chris must resist pressure from the hospital not to testify against a bungling doctor for malpractice. With solid chunks from medical repair manuals and a ten-page operation--a second-hand doctor drama that's several scalpelcuts below such authentic items as Neil Ravin's M.D. (p. 35).