Since it resulted in a person being shot I believe police should had done a complete investigation in interviewing multiple witnesses, ballistic projectile travel, etc.

But of course, if that is the case, then there would appear to be ample opportunity for that landlord without involving you - but you never know until you investigate a bit. 

I have heard there are kits for testing houses now but I have never investigated if they work or their cost.

I'm going to investigate TD.

Other than real estate, I am currently trying to get into the airforce, with my career field ultimately being special investigations.

I will give you my thought on this subject only.If you are going to pay someone to mentor you in the fine art of investing, make sure they have a history of success, TALK IS CHEAP, investigate, look at their portfolio, research their background, get proof that they are what they say they are, there are just too many con-artist out there that will tell you anything to get to your wallet!

If you send me a message I am happy to start working on investigating this here in CO or getting you in touch with my Realtor/ PM in Iowa! 

Putting the pieces together, from your post at http://www.biggerpockets.com/topics/62332-what-mentors-are-looking-for- I think you should investigate being a foreclosure data service provider.

I'm planning to finish my investigations in the next 2 days (hopefully).

He came up with an investigative report from 2010 that showed that house has settled and it is suspected that this is due to sinkhole activity.Based on this finding, I approached the sellers agent and he immediately agreed to drop the price of the home to 55K (originally it was priced at 80K).