Investigating the deaths of other witnesses to the attack (a fisherman on the river and an aviator flying that day) leads Doc to Winthrop's Shipyards. The Silver Death's-Heads steal some blueprints to hide their secrets while Doc runs into Winthrop's Secretary, Lorna Zane, and efficiency expert, Harry "Rapid" Pace (who has the annoying habit of repeating almost everything twice). Doc leaves Lorna with his cousin Pat at her new beauty salon/gymnasium. Harry leads the Doc to the home of Bedford Burgess Gardner (owner of Transatlantic Lines and Winthorp's chief rival) based on a comment from the gang overheard at the shipyard.