The bloated corpse in the water at the beginning of the episode was actually a stunt man wrapped in plastic.
The Dockside Restaurant where Longworth questions Johnny's partner Mark Ellison was shot at the popular restaurant Sea Watch on the Ocean in Fort Lauderdale.
The raw bar where Longworth and Callie look at the Legends of Magdalena book is actually Cap's Place in Lighthouse Point, Florida. It's Broward County's oldest restaurant and was home to many bootleggers and illegal gamblers during the late 1920s.
The buried teasure scene with Callie and Longworth in the Mangrove Swamps was shot at Oleta River State Park.
Merrill Stevens Boatyard on the Miami River served as the shipyard in this episode. The Boatyard originally opened in 1885 and was used to repair WWI and WWII Navy and Marine vessels.
Production notes courtesy of Marc Weinstein.