Soft Touch — John D. MacDonald

Jerry Jamison wants out: out of a sloppy marriage, a dull job and the empty suburban rat race. Once Jerry had a beautiful bride and a good salary at her old man's successful business - that was before his wife turned into a lush. Before the business started to go to pieces. And before the lazy afternoon when Vince Biskay, an old army buddy, rings his doorbell and makes an intriguing proposition. Vince promises to bring excitement into Jerry's life - and money - but this is a plan that leaves only death and destruction in its wake.