"Haven't Seen You Since the Funeral" by Ernest B. and Alice A. Brown

Alfred Hitchcock's Mystery Magazine, December 2008, p. 25–41

Out jogging, Boston P.I. Valerie Dymond gets a cell phone call from a stranger apparently watching her. Dealing with her fear, Val goes about tracking down the stranger through her open cases and a car she spots.

Created by husband-and-wife team Ernest B. and Alice A Brown, Val is tough enough, but she's introspective enough to explore why this stranger gets to her more than a simple prank caller might.

The mention of a funeral brings to mind "Grave Trouble" from the same issue. While that story quickly sets a humorous tone, the cover story just as quickly sets a chilling one.