Booty
In the marina floats the corpse of the most brilliant of the three Hasker family salvage associates. They found Florida's richest Spanish galleon yet, but lost most proceeds to a Spanish claim, handled by Dulce Mendez, and their own lawyers, after which he left the business to work in Mark Ellison's restaurant. His boat's GPS coordinates being wiped and the antique dagger he was stabbed to death with suggest he was on the trail of the ultimate prize, so who knew and claimed what?