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Shadow Island Books in Order

Part ofMary Stone Books in Order

Browse the Shadow Island FBI mysteries by Mary Stone in order, with book summaries, series background, and guidance on tracking Rebecca West’s investigations across the island.

Last updated: December 21, 2025

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Publication Order

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20 books

1

Shadow's Sacrifice

by Mary Stone

2025

A case where survival seems to demand an impossible sacrifice forces Rebecca West to weigh one life against many, knowing that whatever she chooses will haunt her.

2

Shadow's Reckoning

by Mary Stone

2025

When an informant dies on his way to her and all signs point to an execution, Rebecca West realizes the man who ruined her life is back, and Shadow Island is heading for a reckoning years in the making.

3

Shadow's Collision

by Mary Stone

2025

Old enemies and new collide on Shadow Island, and Rebecca West stands at the impact point, trying to keep the collision from destroying everyone caught between them.

4

Shadow's Siege

by Mary Stone

2024

Coordinated attacks leave Shadow Island feeling under siege, and Rebecca West must hold the line while figuring out who is orchestrating the chaos from behind the scenes.

5

Shadow's Loss

by Mary Stone

2024

A personal loss shakes Rebecca West to her core, and while she grieves, a ruthless adversary takes advantage, counting on her distraction to pull off their next move.

6

Shadow's Fate

by Mary Stone

2024

Whispers of a curse resurface when a teen is found murdered in a cemetery, but Rebecca West knows Shadow Island’s grim fate will be sealed by people, not legends—unless she can stop them.

7

Shadow's Escape

by Mary Stone

2024

A dangerous criminal slips through the cracks and heads straight for Shadow Island, turning the entire community into a potential hunting ground as Rebecca West races to cut off every route of escape.

8

Shadow's Doom

by Mary Stone

2024

Every new clue suggests that doom is closing in on Shadow Island, and Rebecca West has to decide which threats to confront first in a race she can’t afford to lose.

9

Shadow's Watch

by Mary Stone

2023

A series of crimes suggests someone has been watching the island’s residents for years, and Rebecca West has to turn that relentless watchfulness back on the watcher.

10

Shadow's Ritual

by Mary Stone

2023

Graves disturbed and bodies marked with strange symbols send rumors of dark rituals rippling through Shadow Island, while Rebecca West looks for the very human killer hiding behind the legend.

11

Shadow's Mystery

by Mary Stone

2023

A death that makes no sense pulls Rebecca West into a mystery where every answer only raises more questions about who is really running Shadow Island.

12

Shadow's Hostage

by Mary Stone

2023

When a hostage situation explodes out of nowhere, Rebecca West realizes it’s tied to deeper island grudges—and that the captor may be more desperate than anyone understands.

13

Shadow's Hoax

by Mary Stone

2023

Elaborate lies and faked dangers mask a very real threat on Shadow Island, and Rebecca West must figure out which threats are hoaxes before the true danger strikes.

14

Shadow's Force

by Mary Stone

2023

A shadowy group exerts quiet force over Shadow Island’s politics and law enforcement, and Rebecca West must expose them before their control becomes absolute.

15

Shadow's Flame

by Mary Stone

2023

A devastating fire exposes long‑hidden crimes, and Rebecca West has to sift through ashes both literal and emotional to find who lit the match.

16

Shadow's Darkness

by Mary Stone

2023

As bodies accumulate and fear spreads, Rebecca West must face the darkest corners of Shadow Island—and of herself—to stop a killer who thrives in secrecy.

17

Shadow's Conspiracy

by Mary Stone

2023

A battered man washed ashore alive leads Rebecca West to a conspiracy that reaches from the Yacht Club to the island’s own government, threatening everything she’s tried to clean up.

18

Shadow's Secret

by Mary Stone

2022

Hoping for a quiet break on the island where she once vacationed, former FBI agent Rebecca West instead joins the local sheriff’s office to hunt the killer of a teenage girl, uncovering dangerous secrets tied to an elite Yacht Club.

19

Shadow's Deadline

by Mary Stone

2022

Anonymous threats and a looming countdown force Rebecca West to race against a literal deadline, knowing that failing to crack the case in time will mean another body on the island.

20

Shadow's Captive

by Mary Stone

2022

A terrifying abduction on Shadow Island proves that Rebecca West’s first case there was only the beginning, as she hunts someone who believes the isolated community offers perfect captives.

Series background & context

Shadow Island looks, at first glance, like the perfect escape: a quiet beach town, summer cottages, and the sense that the outside world is very far away. For former FBI Special Agent Rebecca West, that’s the point. After the case that finally brought her parents’ killers to justice also ended her Bureau career, she heads back to the island where she spent childhood summers, hoping a few months by the ocean will help her figure out what comes next.

Peace doesn’t last long. In Shadow's Secret, a seventeen‑year‑old girl vanishes and is later found murdered in a marsh, strangled and left like a grim message to the community. The tiny local sheriff’s department is overwhelmed, and Rebecca is pulled into the investigation as a temporary deputy. Her instincts tell her the killing wasn’t random; on a small island, victims and suspects are tied together in ways outsiders rarely see.

As the series unfolds, it becomes clear that Shadow Island’s postcard image hides something rotten. An exclusive Yacht Club nobody wants to talk about, a powerful Select Board, and long‑standing grudges twist through nearly every case. Bodies wash ashore, informants turn up dead, and what first looked like isolated tragedies start to resemble a coordinated effort to keep the island’s secrets buried.

Rebecca is a different kind of law‑enforcement lead than Stone’s FBI agents. Stripped of her badge, she has to earn the trust of locals who remember her as a teenager, navigate small‑town politics, and work with colleagues who don’t have federal resources to lean on. The stakes feel both intimate and expansive; saving one teenager or exposing one conspiracy could change the future of the entire community.

The tone mixes moody coastal suspense with procedural investigation. Foggy docks, ruined buildings, and the aftermath of spectacular crimes—like the so‑called Yacht Club Massacre—give the series a slightly gothic edge without tipping into the supernatural. Rumors about curses and witches swirl, especially when victims are left with occult‑like symbols, but the real horror always proves human.

By later books, Rebecca has stopped pretending she’s just passing through. Shadow Island has become her responsibility and, in a messy way, her home. Cleaning it up means confronting not only killers and corrupt officials but also her own sense of guilt and purpose.

If you like small‑town mysteries where everyone knows everyone, and where the ocean keeps coughing up more than seashells, Shadow Island offers a long, twisty stay.

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

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All 20 Shadow Island Books in Order (Complete List 2026)