Fidelity by Thomas Perry

Perry is probably my favorite active author and this book was pretty good. After L.A. PI Phil Kramer is shot dead as he's getting into his car one night on a quiet street, his wife, Emily, and his staff set out to find whodunit and why. As they dig, Emily discovers Phil had many secrets. Meanwhile, Jerry Hobart, the hired gun, is ordered to kill Emily. Suspicious of his client's motives, Jerry starts investigating his client, who, the reader learns, is Ted Forrest, a wealthy playboy with a secret life.