The First Lady: Betrayal, Lust, Bloodshed

An early retiree spending lazy days in Mexico, is thrown together with America’s First Lady after a plane crash on a remote Baja beach. They are threatened by village locals, but manage to escape in a rubber life raft where they find passionate late-life love.
The President calls out the marines, but unwittingly they dodge detection on their sail north. Romance flowers and their time together is much like a honeymoon.
Eventually the First Lady is reunited with her husband whose suspicions are aroused, and he views the retiree as a threat to his reelection. The retiree does all he can to placate the President, but senses trouble and drifts off to vacation in Europe. The President has a deranged killer freed from prison and sets him on the trail of the retiree with murder on the menu.
There follows a wild, sometimes humorous, romp through Europe and Iberia, climaxing with an ironic twist in Asheville, North Carolina.