Dark Passage - Madge's Apartment
It's fascinating to see how the director filmed Madge's apartment house. CitySleuth deduced that two different buildings on Russian Hill, several blocks apart, were used then seamlessly edited to appear as one. Studio and location footage were intermixed and one of the scenes incorporated two concurrently running background projections.
Based on a comment from Baker during their confrontation on the bluff, Parry suspects his jealous ex-girlfriend Madge Rapf (Agnes Morehead), who had testified against him in his wife's murder trial, was his friend George's killer. He confronts her in her apartment where she flies into a rage and also admits she was the one who killed his wife for taking Parry away from her. Parry was innocent after all.
Then ... This footage of the falling Madge was filmed from the roof of 1090 Chestnut. Directorial artistic license prevails because the window she falls through (above) faces Bay Street to the north but here we see her falling down the west side of the building to Larkin Street.
Then ... ... and Now
Then ... Parry, fearful he will be accused of Madge's death, bolts to the roof of the same building, 1090 Chestnut, oblivious of the glorious view east to Coit Tower atop Telegraph Hill
Then ... The next shot of Parry starting to climb down the fire escape is very cleverly done, filmed in the studio with a projected background to simulate the location. The view looks north from the same roof down to Bay Street. But check out the scene through the escape ladder opening - close inspection reveals that this street and these houses are the same ones as those above them on Bay Street! In the movie the cars on these streets were moving out of sync, so two concurrently-running projected images from the same footage must have been used for the background. That's a lot of work for just seconds of action but quite brilliant.
Then ... He continues down the fire escape, but this is a different building, the Tamalpais Building at 1201 Greenwich Street, a few blocks away on the corner of Hyde!
Then ... In this shot we fortuitously get to see both of the buildings used to represent Madge's apartment. Filmed from across Hyde Street, Parry is climbing down 1201 Greenwich on the left and in the distance on the right is 1390 Chestnut. What good fortune! Sausalito and Mount Tamalpais are across the bay - note also that reservoir ...
Then ... Finally, Parry jumps down to Hyde Street. He pauses in the middle of the road before completing his escape on a passing cable car. The quintessential San Francisco view behind him leads the eye east down Greenwich then up again to Telegraph Hill.