. ;)I have had good experiences with mystery money/cash tenants, but I do extensive vetting.  

FHA loans require owner-occupancy or enter the mysterious DOS clause..

There is no mystery here or secret the program is pretty clear do they have tons of affiliates and programs they want to sign you up for and make money?

It was a mystery to me. 

@Rob Cee  from a non builder private passive investor construction loans are the most risky one could do... the risk is builder fails in the middle or ( like a builder I know ) built a home 3 inchs out of plumb.. caught at framing stage only way to fix was to tear it all down and redo it.he chose to finish it... and it looks like it should be at the Mystery spot.. doors crooked etc. house value to some one but steep discount.Liens  like here in Oregon properly filed mechanics liens are super liens...

My 11 Clover St property is held by 11 Clover St LLC :)I would recommend having a business name that is somewhat explanatory:Skyler's RE InvestingLogan's Local Landlord LLCetcSometimes, especially in technology, you see some cool, but utterly mysterious names:AegisRontomMorian SystemsI don't like to make potential investors/buyers think too hard.  

It's a rather mysterious area of investing for a lot of real estate investors, and I wanted to shed some light into a deal our company, Seasoned Funding, LLC completed a while back.

Then you or the mystery buyer went to the bank for a $50,000 loan, right?

It may be a little sneaky, but to me it's no more so than mystery shopping a store. 

There is no magic, no secret, and no mystery to this process.