Here we go again. The Metro (DC) Police Department can't stop making themselves look bad. Now they are asking Joe McCann, a PI hired by the Levy family to submit to a polygraph. WTF? Looks to me like they are trying to distract from the fact that they didn't search far and wide enough the first time. Here's an idea, instead of harassing this PI, maybe the Metro Police should just do their damn jobs and start solving the hundreds of open murders from the last 10 years. This is a ridiculous waste of taxpayer money and an obvious attempt to distract from their own failings.