Fan Casting Crossing The Line of Revenge

Brad Johnson, a marine biologist, lives near the marina in a mansion with his father, George, sister, Sam, older brother, Adam and younger brother, Danny. They moved to the Carribean from New York, after George's wife(Brad, Adam, Danny and Sam's mother)passed away. All that changed one night, when George and Danny went to a basketball game, Sam was hanging out with a friend and Brad was playing basketball, Adam walks to a store, and he is confronted by a bunch of hitmen and he gets his throat slit and he dies at the hospital from the injuries. Brad is now bent on revenge to get the men who killed his older brother. He teams up with an old friend of his from New York, a retired FBI agent, a fellow marine biologist and his slain brother's former flame to go after the mastermind.