As the gang hatches an illicit scheme to get to the bottom of the deep-sea mystery, John B confronts Sarah while Pope jumps at the chance for revenge.

A spooky island legend, a broken friendship and John B’s new living situation keep the crew on their toes as they search high and low for the treasure.

JJ's reckless behavior ramps up when the friends try to score some quick cash. Meanwhile, John B grows closer to Sarah — and makes her dad suspicious.

An island crawling with law enforcement and a looming tropical storm are just two of the obstacles facing John B as he tries to make his escape.

With time running out, John B and Sarah strike an uneasy bargain, while Kiara, JJ and Pope search for evidence that could implicate Ward and Rafe.

Low on gas and strapped for cash, John B and Sarah run into trouble. Pope's appointment in Charleston takes an ominous turn over a proposed trade.

John B bristles when Sarah reconnects with a former flame. Ward's web of lies starts to unravel. Pope discovers a shocking family secret.

An emotional homecoming is easier for some than others. Big John searches for the diary. Ward's plans for a prized possession don't sit well with Rafe.

Sarah convinces an old friend to help with a high-risk, high-reward mission. Looking to access a museum collection, John B and his dad get creative.

Secrets threaten to drive a wedge between John B and his friends. Sarah revisits a past life. Pope reaches a breaking point.

With Singh on the move, John B and JJ scramble to catch him. Pope makes a breakthrough. Sarah questions where her loyalties lie.

Rafe lays his cards on the table and Sarah calls in two favors. JJ's unorthodox plan to get to South America lands John B in hot water.

With their ride to Orinoco waiting on the tarmac, Kiara and JJ run into several complications. Rafe has a change of heart.