What the fuck? This is a fucking bluff all the way. Would a private investigator mispell words in an email?

Would he send you a polite email letting you know he's on to you, or would he send some fucking cops over and get you busted instantly? Fuck this prick, he's clearly some asshole trying to take advantage of your services. Tell him to go suck off the whole "vancover" police force for all you care, sit back, blaze and forget it ever happened.

Or, just to be on the safe side. Go with Torog's advice! You can never be 100%, but this guy is obviously bullshitting.