Languishing in their posh pad in Manhattan, Jennifer (Katherine Ross) and Paul (James Caan) are a beautiful but bored couple. While whiling away their time amidst a decorative orgy of Pop art, wild wallpaper, pre-Columbian statuary, and altered pinball machines, they amuse themselves playing outlandish games that verge on the vicious. One day, a cosmetics saleswoman named Lisa (Simone Signoret) knocks on their door. Invited to stay, this much worldlier woman ups the ante on their antics, suggesting they indulge in diversions a bit more risky. Director Curtis Harrington is no stranger to the grand and ghoulish. His earlier films, Night Tide (1961) and Queen of Blood (1966), used atmospheric settings to evoke an eerie sense of tottering reality. Reprising her role from Les Diaboliques, Signoret is here unnervingly swathed in mystery like a begowned ghost. Harrington's whodunit turns into a who-did-what-to-whom as the games go Guignol.