A sea-going version of Hitchcock's The Lady Vanishes, only it's the new husband (Carl Betz of The Donna Reed Show fame) of luxury-liner honeymooner Jeanne Crain who turns up missing. . .that, and anything resembling a satisfactory solution to what is an otherwise engaging (if extremely talky) B programmer. Intriguing lead-in immediately sets the pace for what's-really-going-on-here suspense piece but ultimately endless chatter, redundant action and a ketch of illogical red herrings run this one aground. (Film buffs may recognize one of the supporting actresses wearing Celeste Holm's jeweled-necked gown from All About Eve.) As cruise ship thrillers go, sea minus.