Grace digs for clues after a distinguished doctor kills an intruder in his home, but the doctor's version of events raises questions. Elsewhere, tension between Rhetta and Ronnie reaches the breaking point; Ham surprises Grace with big news; and Earl instructs Grace to help Neely.

Grace deals with life problems, including the residual impact of her plummet from a building with Neely and the looming death of her grandfather. Meanwhile, the team probes two slayings related to a water dispute; secrets surface about Rhetta's daughter.