Moon In Scorpio

1980s American horror starring Britt Ekland. Newly-weds Linda (Ekland) and Allen (John Phillip Law) embark on a honeymoon cruise with Allen's friends, and fellow Vietnam veterans, Burt (William Smith) and Mark (Lewis Van Bergen) and their wives, Claire (Jillian Kesner) and Isabel (April Wayne). However, the joyous occasion quickly turns tragic as the three men are tormented by horrific acts they committed during the war, and a vengeful killer begins targeting the group.