Assume nothing
(Book)

"When Andy Baumhower plows his van into ex-cop Joe Reddick's car late one night after dumping a body in the LA River, one of his three accomplices to murder thinks the best way to ensure Reddick's silence regarding the accident is to threaten his estranged wife and young son with a K-bar knife. Bad mistake. Because Joe Reddick's lived the nightmare of losing a family to a crazed killer once, and he's not going to let it happen again."--P. [2] of jacket.