When accountant Edward Langford is found murdered in the rain, Detective Marcus Hale and his partner Lena Ward uncover a secret weapons smuggling operation hidden inside the Black Harbor dockyards. As they follow a trail of financial records and stolen files, they discover that powerful city officials, including Councilman Richard Halpern, were secretly funding the criminal network. In the end the detectives expose the conspiracy and arrest Halpern, bringing down a web of corruption that had quietly controlled the city of Grayhaven.
