http://frankensteinia.blogspot.ca/2010/08/frankenstein-mystery.html (http://frankensteinia.blogspot.ca/2010/08/frankenstein-mystery.html)
The "knock" was definitely caused by Clive. Don't know what the object is? Usually don't see bugs fly like that.
Clearly, it's Bigfoot.
(http://4.bp.blogspot.com/-4AwKKLiCeiE/Tywh6KMnKdI/AAAAAAAAvaI/CkZaj99HZ9o/s400/finding_bigfoot__season_2_group_shot_by_rictor_riolo-d4n5pk2.jpg)
Mike, I STILL think that someone knocked an ashtray over. (g) I call it "The Case of the Flying Woodbine."
"E"