I was recently so impressed with The Spiral Staircase that I went down a little bit of a rabbit hole seeking out other films from director Robert Siodmak. Just a year after Staircase, he helmed another shockingly modern proto-slasher entitled The Dark Mirror. The film stars Olivia de Havilland in dual roles as twin sisters Ruth and Terry Collins, one of whom is concealing a dark secret. You see, Terry is a sweet girl working at a lobby newspaper stand and has fallen for the beguiling charms of one Dr. Frank Peralta, who has an office in the building. When she’s seen leaving his apartment the very night on which he was found stabbed to death, multiple eyewitnesses can account for her presence — except that her alibi is rock solid, as she was also seen at the exact same time in the park by her butcher and a patrolman. Befuddled police lieutenant Stevenson (Thomas Mitchell) can’t make heads or tails of it until he visits Terry one night and meets her twin sister, Ruth, learning that the two live together and even trade off the “Terry” identity in public so that they only have to have one job. When the district attorney admits that they can’t make a case against either woman as they’d each be covered by the proverbial shadow of a doubt, Stevenson enlists the help of Dr. Scott Elliott (Lew Ayres), who coincidentally has an office in the same building as the late Peralta and happens to be a specialist in the field of twin studies, to surreptitiously study the two and find out which of them is the killer. 

The duplication special effects in this one are fantastic, give or take a couple of dodgier scenes where the intercutting and blocking don’t quite measure up. As the title would suggest, there are numerous sequences in which mirrors are a focal point, including several in which both Ruth sits at a vanity mirror and has a conversation with Terry while the latter reclines in bed behind her, both of them visible in the reflection. It was a technical marvel, and I kept trying to figure out how it was done, getting a little lost in trying to tease out the details (I decided it must have been that the Terry segment was shot first and then projected on a screen behind de Havilland while she shot the Ruth portion). Regardless of how it was accomplished, it looks amazing, and when the two are in the same shot using split screen tech, it’s also very well done. Of course, all of that movie magic would be wasted were it not for de Havilland’s strong performances as each sister, as there’s never any real doubt about who’s who. The film often differentiates them through their monogrammed bathrobes, Ruth’s “R” brooch, and a pair of extremely tacky necklaces that bear their full first names, but de Havilland plays each woman so that these visual cues are largely unnecessary. Terry seems forthright and personable while also clearly being the steelier, stronger woman; Ruth appears to be extremely kind-hearted and verging on the naive, and clearly more troubled by the situation in which the twins find themselves than her sister. 

Contemporary reviews of the film were mixed, but one of the ones that stood out to me was from Variety, which stated that the film “runs the full gamut of themes currently in vogue at the box office — from psychiatry to romance back again to the double identity gimmick and murder mystery.” I was struck a bit by this reference to “psychiatry” as a common film topic, since I’ve not run across many films of this era in which this was a common element or theme. M certainly had an element of psychological detective work at play, and there was a series of films based on an earlier radio series that began with 1943’s Crime Doctor (all ten films in the series were released before 1949). If anything, I associate suspense thrillers of the 1960s with direct references to psychiatry: hitting the ground running in 1960 with Psycho devoting its closing moments to a psychologist explaining Norman’s particular maladies; the ongoing exploration of the psychological profiles of the dueling personalities at the center of Whatever Happened to Baby Jane? in 1962; the journey to the heart of the mental health hospital system in 1963’s Shock Corridor. On further reflection, though, this one came very close on the heels of Gaslight in 1944 and Alfred Hitchcock’s 1945 feature Spellbound, the latter of which featured Ingrid Bergman as a psychoanalyst who falls for her amnesiac patient played by Gregory Peck (who wouldn’t?), so I suppose there is a possibility that this was, at the time, a gimmicky attempt to cash in on a recent craze (no pun intended). It even features a Rorschach test, although they refer to it only as an “inkblot test,” as perhaps the Swiss inventor’s name hit the post-war American ear as a little too Germanic. 

Where this one fell a little short of Staircase’s greatness was in its failure to live up to my expectations, which is hardly the film’s fault. I’m eighty years removed from when this was made, so it may be unfair of me to resent that the twists in this one didn’t go as far as I would have liked. I would have appreciated the film more had it spent some small amount of time on the possibility that neither sister was Peralta’s murderer, as it would have been fun to see de Havilland playing off of herself in scenes in which both sisters wonder if the other is a killer. I’ve also seen “Treehouse of Horror VII” (the one with Bart’s evil twin Hugo locked in the attic) more times than I could possibly recall, so there’s a part of my brain that kept waiting for the twist that the supposed “good” twin was the killer and that the “bad” twin was covering for them, or that one of the twins had some history of violence but not the one we think. Maybe the twins were both trolling Dr. Elliott all this time and occasionally impersonating one another in their sessions with him. Any one of those would have pushed my rating a little higher; instead, once Dr. Elliott establishes that one of the women is a one-in-a-kajillion sociopath, it’s clear which one is virtuous and which one is responsible for all their troubles, and it’s a little rote from there. What keeps it from falling off completely is that this revelation allows more insight into just how manipulative one sister is of the other, and the final scene is still a phenomenal showcase for de Havilland. This one has been slightly difficult to find at times, but is currently available on the Roku app. If you, like me, don’t have that, then maybe you can find it at your local library. I did!

-Mark “Boomer” Redmond