The Men In Black has these relationships to other tropes:

parents kids shares a parent with:
No Such Agency
Stock Unsolved Mysteries
parent child
Stock Unsolved MysteriesWho Shot JFK
''Phlebotinum Killed The Dinosaurs
''Lost Roman Legion
''Jesus The Early Years
''Pyramid Power
''Jack The Ripper
''Roswell That Ends Well
''Bermuda Triangle
''The Tunguska Event
You'll need to Get Known if you want to add or modify these relationships.