Early Retirement

Sandy, a retiree who is happily busy with projects, walks along a hilly waterfront every morning. When he can't avoid it, he puts up with the complaints of Wendell, another retiree who walks his wife to work along the same path. One morning, Sandy learns that Wendell was found dead on the rocks at the foot of a steep hill. The cops have written it off to a heart attack. But was it that? Or something else?