You're going to need to do a little detective work. 

On final inspection the camera detected a three inch belly in the pipe.

Here's great info to help detect fraud from Immigration and Customs:http://apmp.berkeley.edu/APMP/refdocs/travidentdocs.ins.pdfAlso, another great resource (for pay) is:www.driverslicenseguide.com

I was worried about low level residual smell that other cats/dogs might still detect -- once they start going on one area of the floor, it's very hard to get them to stop.

So I get a call from the Boston Police detective assigned to the case.

However, such inspections will inform the seller on potential problems in their homes that are not very obvious or not easily detected by the untrained eye.

If a lender detects, suspects or decides to allege fraud even at some future date they can unwind these deals and come after everyone they choose to pursue.

One effective way we've used (and still using) is our "Columbo Technique" that I named after the detective inspector Columbo.

I contacted the local detective assigned as lead to the case and even left my info with an officer who was parked outside my house (I wanted to know what was going on and figured they'd want to ask me questions as I was there earlier in the day) but the detective never contacted me (they seemed unprofessional - they tossed their latex gloves they wore inside the house outside on the porch which I found to be rude and insensitive based on the situation).I think I handled the situation well - I got a card from the deceased's family thanking me.

This can help to detect where moisture issues are coming from.A leak could be from anywhere and a hundred different things.