Emancipated during the American Revolution, Salem Hawley is a free man--until he finds himself indebted to a doctor for treatment for injuries incurred during the New York Doctors' Riot. Recruited to recover the stolen grimoire, Al Azif, Salem embarks on a journey north, to Arkham, Massachusetts.

Plagued by rain and the incursion of strange, otherworldly creatures, the seaside town of Arkham has become a dark and dangerous place. Unable to trust the locals, Hawley is forced to rely on only his wits to track down the thief. He must also contend with Louise LeMarché, an outcast and suspected witch who is searching for the missing tome, as well.

Time is against Hawley. Something ancient and evil is rising from the depths of the Atlantic, and if Al Azif is not recovered quickly, it could spell doom to Arkham... and all of humanity.

Borne of the Deep, the second book in the Salem Hawley series, is a novella of Lovecraftian cosmic horror and continues the story that began in The Resurrectionists.