Originally Posted by Pierre
What could Donald Swanson have known about this?
It's hard to say really Pierre. Swanson was a mere Chief Inspector in the Criminal Investigation Department of whom the Commissioner of Police said that he "must be acquainted with every detail"
and that "He must have a room to himself, & every paper, every document, every report every telegram must pass through his hands."
So it's a bit of a mystery as to what Swanson could possibly have known about the writing on the wall. Do you have any easier questions?