San Juan Islands Mystery Books in Order

The San Juan Islands Mystery series follows Adele Plank, a young journalist whose drive to find the truth repeatedly pulls her into danger. The books are set among the islands and waterways of northwestern Washington, where ferries, marinas, private shorelines, isolated homes, and small communities create an ideal setting for secrets.

Adele begins in The Writer as a college journalist granted a rare interview with Decklan Stone, a famous novelist who has withdrawn to a private island after a long-ago tragedy. What begins as a promising assignment becomes a much darker investigation. The novel establishes Adele as curious, compassionate, and not especially good at walking away once she knows something is wrong.

By Dark Waters, Adele has returned to the islands after graduation and is working toward a future in reporting. A young woman's murder shakes the community, raises doubts about the local sheriff, and makes Adele decide who deserves her trust. Each later book gives her another mystery while also allowing the people around her to become a larger part of the story.

The islands are more than a pretty backdrop.

Adele's life is rooted around Roche Harbor, including the marina where she lives aboard her sailboat. Friends, local residents, law enforcement figures, and the people she meets through her reporting create a close community where almost everyone has a history with someone else. That closeness gives the mysteries their tension. News travels quickly, but the truth often arrives slowly.

The series moves through winter deaths, shootings, old grudges, threats from outside the islands, and crimes that bring buried history to the surface. Murder on Matia, Rosario's Revenge, Roche Harbor Rogue, Turn Point Massacre, and Deadman Island all build on Adele's changing relationships and growing experience as an investigative reporter. The mysteries can be tense and sometimes violent, but the books also make room for friendship, romance, humor, and the routines of island life.

Readers should start with The Writer. The individual cases have their own central problems, but Adele's personal story and the meaning of her relationships develop over time. Reading in order makes the emotional stakes clearer, especially as earlier events and old enemies return.

This is an atmospheric mystery series with a strong sense of place. Expect Pacific Northwest scenery, recurring characters, personal fallout, and a reporter who keeps asking questions when it would be much safer to stop.