The narrator isn't exactly a madman but, rather, someone whose madness is quieted by meds. "It is a very hard thing, in this time of ours, to be mad and middle-aged," hero Francis Petrel writes early on. Perhaps the best feature of veteran crime writer Katzenbach's latest is the way he fleshes out the everyday desperation of someone living on the fringes of society. Petrel receives an invitation to a reunion of former "guests" of the insane asylum his parents consigned him to as a teenager. This not very credible plot starter leads Petrel to investigate what horrors led to the hospital's closing, his thoughts especially revolving around the unsolved murder of a nurse. Intriguing, but far too long and too encumbered with Petrel's Byzantine thoughts to generate suspense. Still, the Edgar-nominated Katzenbach has a following, and this introspective tale will interest those who don't read thrillers for the thrills.