Devil%E2%80%99s Plaything

In Richtel's deft follow-up to Hooked (2007), medical reporter Nat Idle thinks someone taking potshots at him and his beloved grandmother, Lane, in San Francisco's Golden Gate Park, may be payback for his snide expos%C3%A9 involving city officials and torched port-a-potties. Further attacks and an encrypted flash drive from a scientist who subsequently disappears soon indicate otherwise, and Lane's disjointed statements related to a computer-assisted oral history project suggest that she may know more than she's capable of revealing about a larger conspiracy. Surrounded by dubious figures such as a mysterious venture capitalist, an anal-retentive nursing home manager, a neurologist with suspicious connections, and a colorful witch who reads people's auras, Nat is wary of trusting anyone and frantic for Lane's safety. Numerous plot twists and cliffhangers keep the reader turning the pages in this plausible if disquieting scenario of Big Brother not only watching but also messing with minds. (May)