Around 00:33:00, Antoine's left hand is up or down depending on shots.
Around 00:46:36, Lise removed her curlers and her hairs are curly. Around 00:48:19, in the car, her hairs aren't curly anymore.
Around 00:58:00, in the background, on the left angle of the street, we can see the tip of the smoke machine.
Around 01:01:01, we can see the crew's or equipment's shadow on Lise's back.
Around 01:31:05, we can see the equipment's shadow on Antoine's back.
Tanquerelle is going to Saint-Lazare train station, named twice, to catch up with Lemercier leaving for Honfleur in Normandy. The filmed train station is actually Austerlitz train station, where trains go south only.