Moon In Scorpio (1987)

A newly married couple (Britt Ekland, John Phillip Law) are going to spend their honeymoon sailing to Acapulco with two other couples. The other two men (William Smith, Lewis Van Bergen) are, like the groom, Vietnam vets. Directed by Gary Graver, this slasher film is often incoherent and appears to have been messed with during post production. It was never released theatrically and went straight to video. Perhaps worst of all, we're never given a motive for the killer's murderous rampage though I'm guessing it has something to do with their Vietnam past. It's not the kind of movie where the acting matters much but surprisingly, Ekland manages to summon up some semblance of a performance. The other actors aren't so lucky. An untidy movie but watchable. With James Booth, April Wayne, Jillian Kesner and Robert Quarry.