Oh, Benson is a character I introduced earlier, and I just wanted a third person in the room during the final scene.
I think Smith pointed out that it may have been possible to have missed a body if it was there at the time.
That's how a hanging works. i'm not sure about the details.
He read the note, which was probably in full view as a "suicide" would like it to be.
Narrative omission.
Yeah, well when the police show up at your door demanding you come, they're going to tell you it's a homicide investigation.
She's an assistant, she may have been doing some secretarial work, maybe to get a paper clip, maybe to pass on secret bomb codes to undercover spies planning to start a nuclear war.