We are joined this week by Greg Johnson who is taking on another one of Gary's diabolical puzzles. We have a lot of fun together! Do you think he can solve the connection?

Here are the clues:

Set 1 - Gate, Tower, Meter, Pollution

Set 2- Angel, Crystal Bernard, Dove, Paul McCartney

Set 3 - Ranger, Third Caray, Mr. Potts, Chocolate

Set 4 - Illinois, Missouri, Massachusetts, Isotopes