Off and Running

Off and Running is a 1991 American comedy mystery film starring singer and actress Cyndi Lauper, David Keith and directed by Edward Bianchi.
Plot.
Lauper stars as a mermaid-themed lounge singer who gets involved with a caring but troubled man played by Jose Perez. Because of his involvement with horse racing and breeding (and consequent mafia ties), the man is murdered in front of her, and she goes on the lam to escape his killers. On the way, she takes on the company of a professional golfer and a rebellious pre-teen boy, and together they attempt to unravel the mystery behind her slain lover's past.
Release.
The film was not widely distributed and coasted into notability mainly because of Lauper's involvement. It is generally available on VHS for less than a dollar. The film fared far better in other countries where Lauper's popularity has sustained.
In Germany and Japan it was released under the title Moon Over Miami.