Harry Terry - The Showman from Hitchcock's THE RING - is the titular face at the window, brought to life by cinematographer Hone Glendinning.
THIS Tod Slaughter "quota quickie" is actually great fun. Steeped in the Grand Guignol tradition, it is fittingly set in 1880 Paris, but all the characters speak with crisp British accents. The drooling face of crazed killer Le Loup ("The Wolf," Harry Terry) appears to his victims in windows, with a lycanthropic howl and a knife plunged into their backs. Against this backdrop leering Chevalier Lucio del Gardo (Slaughter) has set his sights on Cecile de Brisson (Marjorie Taylor), whose heart belongs to bank clerk Lucien Courtier (John Warwick). Del Gardo frames Courtier, but thankfully Lucien also has worked with Professor LeBlanc (Wallace Evennett). LeBlanc's experiments with electricity can reanimate corpse muscles to reenact their final tasks; ultimately this leads to the uncovering of Lucio as The Wolf, who has been aided by his deformed stepbrother.
Directed and produced by Slaughter's faithful helmsman George King, this is one of many screen adaptations of the detective play written by F. Brook Warren in 1897. Before his blossoming as a Dick Dastardly style cad, Slaughter was often cast as the hero on stage in the 1920s, and he even portrayed Lucien treading the boards. THE FACE AT THE WINDOW however sees him at his scenery-chewing best, grabbing and forcibly kissing Taylor in scenes that are uneasily effective. All the truly great horror film actors - Karloff, Cushing, Lee et al - had a particular finesse to their craft, yet Slaughter wallows in slimy delirium and manic cackles. In his own way, he evidently enjoys his work.
The cinematic paradigm of a face at the window is an artistic extension of monster versus victim. Flipping an inside threat to the outside, Alfred Hitchcock makes expert use of Norma Bates' silhouette in PSYCHO.
A visage or figure appearing at windows is one of the oldest and most repeated horror film tropes. Not only is it unsettling for the potential victim, it also radiates doom to a situation and impending threat to property. Often this is a sexual urge from the outside to the passive female inside, in everything from KING KONG to PEEPING TOM. Alternatively it can be the building itself, radiating blue light upon Max von Sydow in THE EXORCIST, or a piece of architecture such as the Amityville house. In the 1970s pop culture was full of demonic children, and the eerie window motif encompassed two particularly unnerving examples on television: the undead orphans of A GHOST STORY FOR CHRISTMAS - LOST HEARTS, and Ralphie and Danny Glick in 'SALEM'S LOT. Yet it is a theme that has shifted like the genre itself, further amplified by productions that have home invasion at their core.