A man is stabbed to death, and all the signs are that his lover terry collins olivia de havilland, gone with the wind is the culprit'. '.strtoupper('b')ut it's impossible for lieutenant stevenson thomas mitchell, stagecoach to prove this, as terry has an identical twin sister, ruth, and there's no way of demonstrating which one has the cast iron alibi'. '.strtoupper('f')rom this gimmicky premise, director robert siodmak the spiral staircase, the killers and producer screenwriter nunnally johnson the woman in the window fashion a fascinatingly complex psychological film noir, as a psychologist lew ayres, all quiet on the western front with a specialist interest in twins is brought in to help solve the crime'. '.strtoupper('d')elving deep into the personae of each sister, he finds himself falling in love with ruth, which simultaneously helps him garner a better understanding of the twins' relationship while also putting himself in considerable peril'. '.strtoupper('w')ith the aid of impressively seamless special effects devised by the legendary eugen schüfftan metropolis, olivia de havilland gives a virtuoso performance as both sisters, only revealing their very different personalities when they're alone together one warm and loving, the other an ice cold murderess.special edition contentshigh definition blu ray 1080p presentation transferred from original film elementsuncompressed mono 1.0 pcm audio soundtrackoptional english subtitles for the deaf and hard of hearingcommentary by film historian adrian martinnoah isenberg on the dark mirror, the author and scholar provides a detailed analysis of the filmthe dark mirror 1950, a condensed radio play adaptation starring olivia de havillandinternational poster gallerytrailer for siodmak's other 1946 film noir, the killersreversible sleeve featuring original and newly commissioned artwork by scott saslow