A Tap on the Window: A ThrillerOne of the Boston Globe's Best Crime Novels of the Year! One of Suspense Magazine's Best Books of 2013! Since private investigator Cal Weavers teenage son died in a tragic accident, Cal and his wife have drifted apart. Cal is mired in a grief he cant move past. And maybe his grief has clouded his judgment. Driving home one night, a rain drenched girl taps on his car window and asks for a ride. He knows a grown man picking up a teenage hitchhiker is