Forty Empty Boxes [SFX: Crane motor. Container doors unlock] NARRATOR: The knocking container held six undocumented workers, dehydrated but alive. They had boarded inside a freight depot and heard crew moving cargo after midnight. Their presence gave the owners a convenient explanation for every irregularity except the ship's weight. ELSIE TRAN: Forty containers are listed as ceramic tile at twenty-six tons each. The crane load cells say most are under five. NIA CROSS: Then something heavier is aboard under a lighter name. OWEN KELP: Or your load cells failed when the ship struck bottom. NIA CROSS: All forty failed by the same profitable amount? NARRATOR: Marr's cabin contained two manifests. The official one balanced perfectly. The second was written in grease pencil on tide tables. Each high tide corresponded to a container number, and each low tide to an amount of missing weight. DR SAMIR VALE: This is not cargo notation. CAPTAIN ROWAN PIKE: Marr gambled. Those may be debts. [SFX: Pencil rubs on paper. Ship creaks] NIA CROSS: They are ballast transfers. At every listed tide, somebody filled a tank while the port scale measured the ship. They made light containers appear heavy, then emptied the tanks offshore and replaced the declared cargo with undeclared metal. ELSIE TRAN: Except the tanks are full now. That is why we grounded. NARRATOR: The scheme required access to cargo records and engineering controls. Rowan had the first. Elsie had the second. Marr had discovered both. Owen Kelp had negotiated a salvage contract hours before the grounding, giving his company rights to recover any cargo abandoned underwater. OWEN KELP: Preparedness is not murder. NIA CROSS: No. But a contract signed before an accident is usually a forecast or a confession. [SFX: Radio static. Radio Morse SOS] NARRATOR: The bridge radio received a weak transmission from beneath the waterline. A man's voice repeated one phrase: Check tank seven. Samir recognized Daniel Marr's voice. Daniel had been dead for nine hours.