Continuity mistake: The dead body Wally discovers in the house has its head straight in the long shots, but canted to the right in the close ups.
Continuity mistake: When Emily Brent is found in her room, the light of the area changes between shots - just look at the direction the legs of the first responder cast a shadow at. Also, the position of his feet is different; he already almost reached the door in the previous shot, and is 2 boards behind in the new one. (01:00:10)
Continuity mistake: After the scene with Junior that busted him as the night kitchen raider, Dick is in his office. Pat Patton tells him about his findings going through the victim's belongings. He leans forward with his left arm, and Dick at the same time pulls his own arm back away from the desk. Next cut and Dick has both hands on the desk and Pat just his right arm on it. (00:12:35)