MaryAnn Clibbery is brutally murdered at the remodeling business she owned in Loves Park, Ill.; then, a suspicious bag found floating in an icy river unlocks the secrets of her brutal slaying.

In Noble, Okla., a dog drops a human skull onto its owners' front porch on Christmas Day; after six years and no leads, the police must navigate the twists and turns of the victim's past to find justice.