AllMovie

Weighed down by a life of failure and disillusionment, Robert Manners (Steven Hill) finds that he cannot even commit suicide successfully. Thus it is that Robert checks into the ultra-exclusive Thantos Palace Hotel, where the clientele consists entirely of would-be suicides who have contractually agreed to kill one another -- and as a "bonus," the victim never knows when his or her number is up. Although at first Robert honors the rules and conditions of the Thantos, he changes his mind upon falling in love with another guest, the hauntingly beautiful Ariane Shaw (Angie Dickinson).