Mark Douglas Home Books in Order

Oceanographer Cal McGill uses tides, winds, and shipping records to investigate two severed feet found on separate Scottish islands. His search for their origin draws him toward exploitation, human trafficking, and dangers extending beyond the coast.

Violet Wells asks oceanographer Cal McGill to investigate why her mother abandoned her as a baby and walked into the sea. Their search confronts a Scottish coastal community united by grief, obsession, and fiercely guarded secrets.

Five years after a teenager disappears from remote Priest's Island, sea detective Cal McGill takes the unresolved case. An embittered community, a fractured family, and an approaching storm complicate his search for what happened to Max.

When Flora disappears, her sister Kate discovers a note naming sea detective Cal McGill. Seeking his help revives another unresolved loss: their mother's disappearance from France twenty-three years earlier, which has haunted both sisters since childhood.