The Theory...

From Bouquets of Gray.

Then... the report from CTV.

The mysterious third party who uncovered serious allegations that led Prime Minister Stephen Harper to toss MP Helena Guergis out of caucus is a private investigator, CTV News has learned.

Police sources say the licensed private eye contacted a Conservative Party lawyer in Toronto, and expressed concern about a potential threat of blackmail arising from allegations about the purchase and use of drugs.

Geez, that might explain some very, (cough), erratic behaviour.

Or not.

In any case... You Tube that, Soudas.