Anthony Molinari

The BAU is called to Oklahoma to investigate a murderous clown who is terrorizing a town.

When Magnum and Higgins get "yacht-jacked," Higgins gets shot, and she and Magnum are stranded at sea, struggling to reach land before she bleeds out and the culprits return to finish them off.

A heat wave hits Oahu, contributing to a spike in crime; McGarrett and Danny hunt down a bank thief; Tani and Junior's car is stolen while they're on duty; Kamekona incites a riot by price-gouging his ice.

As July Fourth dawns, the cell prepares to launch two coordinated dirty bomb attacks on the city of Los Angeles, while Darwyn and the FBI move to shut them down.