Suspects have been named by law enforcement and amateur investigators, but no conclusive evidence has surfaced.

The fictional Friedman lives in lower Manhattan and is an amateur private investigator.

They have something of an antagonistic relationship with Sam and Dean and ironically believe the brothers to be amateur investigators.

The days of the gifted amateur investigator were over.

Jayne Castle "When naive, amateur investigators set out to solve a case for the sake of a principle."

What the devil were you doing playing amateur investigator-" He broke off and listened for a moment.

He has more trouble from the detective in charge of the case, who detests amateur investigators, especially when they are newspaper reporters.

The case was finally solved nearly seven years later with the help of a local amateur investigator and a British journalist.

Twenty-five years after the massacre, Libby meets with a group of amateur investigators who believe that her brother is innocent of the crime.

Two, how he knew they were amateur investigators.