The investigative community is very competitive.  You'll find investigators that come from various backgrounds with various experience.  Some are born investigators.  They come with a built in instinct that has developed into a sixth sense for them.  That instinct combined with training and experience results in an investigator of  unparalled skills and successes.  Other investigators, no matter what they do just can't get it right.  And the type of work makes it so easy to avoid the truth. Its so easy to make excuses in this business ie:  "I lost him at the light", "I just took my eyes off the front door for a second", I had to go to the bathroom", the battery in my camera went dead", I just didn't see the person come out, I swear I was looking at the door".   Anyone who has hired an investigator that was unsucessful getting your results has surely heard some of these excuses.  Things happen.  but the experienced well trained investigator prepares for those things. and the unisnspected.  When you hire an investigator you should get that sixth sense feeling. Can you trust him or her?  Trust is a salient feature in investigators.  In the field the investigators are on there own.  No supervision.  They can do what he or she wants.  Unfortunately some lie.  Those don't usually stay in business for long but some slip thru the cracks.  The bottom line is that If you feel that you can't trust the investigator don't hire him.  It takes more than a license to make an investigator.​