I think we must be told!!!!!
You see, I'm sure that I saw Lord Lucan riding a horse down the Strand, and that horse looked just like Shergar. It was pulling a carriage carrying Elvis Presley, Reggie Perrin and a couple of aliens from Mars.
I understand that they were headed in the direction of the grassy knoll.
But there again, I AM a conspiracy theorist mentalist, so maybe you should just let me crawl back underneath my rock.