This The Mentalist screencap contains
fedora, felt hat, homburg, stetson, trilby, boater, leghorn, panama, panama hat, sailor, skimmer, straw hat, and snap brim hat.
There might also be
pith hat, pith helmet, sun helmet, topee, topi, beaver, castor, and sombrero.
As the CBI investigates the murder of a young girl and the abduction of her twin sister, Lisbon suspects that Red John is trying to draw Jane into a trap.