The Night Watcher Summary: Tariq Ashkanani’s Callie Munro
Introduction
A missing wife, a locked bedroom, and a circle cut cleanly through the window glass.
That is what Edinburgh private investigator Callie Munro finds when she refuses to walk away from a case the police have already moved past.
The Night Watcher by Tariq Ashkanani is the first book in the Callie Munro thrillers, a Tartan Noir procedural set during a bleak November in Edinburgh and along the Fife coast.
Callie is hired by an abusive husband to photograph his wife’s affair, then watches that same woman vanish overnight.
The investigation that follows pulls her into a serial predator case, a police cover-up, and a past that keeps circling back to her own childhood in Scotland’s foster care system.
Readers of gritty Scottish crime fiction, serial killer procedurals, and flawed private investigator stories will find familiar ground here.
The novel suits those who prefer fast plotting, dark atmosphere, and endings that leave threads open.
TL;DR: The Short Version
- Premise: A PI’s routine infidelity case turns into a hunt for a predator abducting women from their homes.
- Setting: Edinburgh tenements, Leith pubs, suburban estates, and a coastal house in Elie, Fife.
- Antagonist: A killer dubbed “The Night Watcher,” who enters through cut window glass.
- Key conflict: Callie works outside official channels while a senior police officer buries evidence.
- Central themes: Institutional failure, childhood trauma, domestic violence, and the violation of private space.
- Ending: The killer is stopped, but a final scene leaves an unresolved death.
This is a plot-driven thriller.
Themes are woven into the investigation rather than treated as standalone commentary, and the novel ends on a cliffhanger designed to carry into book two.
Book Snapshot
- Genre & Subgenre: Crime Fiction / Tartan Noir / Psychological Thriller / Serial Killer Procedural
- Core Narrative Tropes: Flawed private investigator, serial predator, police corruption, framing, childhood abuse as adult pathology, cliffhanger ending
- Tone & Atmosphere: Dark, gritty, tense, cold; Scottish sea fog, winter streets, claustrophobic violence
- Primary Conflict: Callie Munro’s pursuit of the Night Watcher against police obstruction, personal framing, and direct physical threat
- Pacing Style: Fast procedural narrative broken up by second-person killer vignettes
- ISBN: 978-1662528019 (ISBN-10: 1662528019)
- Pages: 304
- Book Structure: 69 numbered chapters plus unnumbered second-person interstitial vignettes
- Publisher: Thomas & Mercer, December 1, 2025
- Series: Book 1 of 3, Callie Munro Thrillers
- Author Background: Tariq Ashkanani writes Scottish crime fiction and is the author of the Callie Munro series.
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The Night Watcher Summary
Spoiler warning: the following section describes the plot, the ending, and the final cliffhanger.
Callie Munro is a cigarette-smoking private investigator working out of Edinburgh. She was abandoned as an infant at a shelter and grew up moving between six foster homes.
Grant Miller, a bouncer and debt collector, hires her to investigate his wife, Amy. Callie delivers photographic proof of Amy’s affair at a Leith pub, and Grant responds by punching her.
Hours later, police tape surrounds the Millers’ semi-detached house in Corstorphine. Amy has vanished overnight from a locked bedroom.
At the scene, Callie meets Detective Sergeant Mackenzie “Mac” Reid. Grant is questioned and released, but Callie notices a circular hole cut into the bedroom window glass.
Police had told Grant to keep that detail quiet. Callie keeps pulling at the thread anyway.
She rents surveillance gear from her tech supplier, Martin Walsh, known as “Mr Glass.” A neighbour’s doorbell camera shows a white Volvo parked near the house for nearly an hour on the night Amy disappeared.
Mac runs the registration and finds the vehicle belongs to Police Scotland Chief Inspector Philip Joyce. He then shares off-the-record intelligence in his car.
The cut-glass method matches two earlier cases over eighteen months, involving night cleaner Jennifer Patton and office worker Gail Hart. An online rumour names the predator “The Night Watcher.”
Mac asks Callie to assist his unofficial investigation. She interviews Nicola Mosley, partner of Gail Hart, and learns Gail had borrowed money from Edinburgh mobster Eddie McCall.
McCall denies harming the women but introduces Callie to Alison, an escort who escaped an abductor after being injected with a spring-loaded syringe near the Queensferry Crossing. Alison describes being strapped to a wooden table in a beach house, hearing the sea and seeing a flashing lighthouse.
Meanwhile, Callie’s controlling on-and-off boyfriend, Richard Price, attacks Grant Miller with a wheel wrench out of jealousy. Callie ends the relationship.
A masked intruder then breaks into Callie’s flat. She fights him off, and he limps down her stairs wearing a large silver watch identical to Richard’s.
Callie invites Nick Fullerton, a security installer whose firm fitted systems at the victims’ homes, to her flat and catches him behaving intrusively on hidden cameras. Mac clears him with a solid CCTV alibi.
Alison’s description of a coastal house near a lighthouse points to Philip Joyce’s holiday home off Ruby Bay in Elie. Mac hesitates without proof, so Callie drives there alone.
She breaks into the dark house and finds a rough wooden birching table with leather straps, plus a body wrapped in plastic. A Pikachu shoulder tattoo identifies the corpse as Amy Miller.
Joyce confronts her with a knife. Callie fights back and strikes him twice over the head with a heavy bronze sculpture of a woman on horseback, putting him in a coma.
Forensics teams unearth six bodies beneath the floorboards and concrete. Joyce’s wife, Eleanor, hangs herself in their garage as the press descends.
Joyce wakes in the Royal Infirmary and asks to speak only to Callie. He offers the name of a person who worked at the shelter where she was abandoned in exchange for her ending his life.
Callie refuses. Seconds after she leaves the room, Joyce slits his own throat with a shard of broken bathroom mirror.
The case appears closed until a seventh victim, Isla Sinclair, is found at Western Harbour with her throat cut and her back whipped. The killer is still free.
He plants Callie’s business card in the victim’s throat and a dog-doodled ten-pound note in Richard’s flat, framing both of them. Eddie McCall helps Callie avoid immediate arrest.
Grant Miller hands her a backpack left in his garden containing PAVA spray, a tie, and a severed human thumb. The thumbprint matches Donna Burnett, an English teacher at the defunct Galbraith Academy in Nairn, murdered a decade earlier.
Callie concludes the killer was a pupil abused by Burnett on a birching table at the school. At the Highland Archive Centre in Inverness, she identifies four pupils who graduated in 1985: Craig McLaren, John Taylor, James Dalgleish, and Paul Brodie.
James Dalgleish confirms Burnett’s history of whipping pupils. On the A9 afterwards, Callie’s sabotaged wheels cause an ambush.
She is drugged and abducted from her safe house by John Taylor. She wakes chained to a basement floor beside a bound Richard.
John Taylor reveals himself as the true Night Watcher and the secret son of Chief Inspector Philip Joyce. Joyce had sent him to Galbraith Academy, covered up his murder of Donna Burnett, and lent him the Elie house to store bodies.
Taylor explains his method: he kept keys from his work as a locksmith on home security call-outs, and used the circular window cutouts as deliberate misdirection.
He prepares to skin Callie alive, but Richard uses the PAVA spray to blind him. In the struggle, Richard takes control of John’s revolver.
Taylor offers to reveal the truth about Callie’s parents if she stops Richard. Callie lets Richard pull the trigger, killing John Taylor and ending the abductions.
Richard is cleared of prosecution due to severe trauma. Callie returns to her Abbeyhill flat and installs reinforced deadbolts and CCTV.
Mac visits to say goodbye as Police Scotland faces an institutional overhaul. In the final cliffhanger, Callie stops at Martin Walsh’s flat to return equipment and finds him dead at his desk, executed by a single bullet through the forehead.
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Characters In This Book
| Character | Role |
|---|---|
| Callie Munro | Edinburgh private investigator who investigates Amy Miller’s disappearance and the Night Watcher abductions. |
| John Taylor | The Night Watcher; serial abductor and killer, secret son of Philip Joyce. |
| Chief Inspector Philip Joyce | Police Scotland officer who concealed his son’s crimes and provided the Elie property. |
| DS Mackenzie “Mac” Reid | Detective Sergeant who shares confidential intelligence with Callie. |
| DI Sandra Dawson | Detective Inspector and Mac’s senior partner, focused on official procedure. |
| Richard Price | Callie’s former boyfriend who attacks Grant Miller, is framed, and shoots John Taylor. |
| Grant Miller | Bouncer and debt collector, abusive husband of Amy Miller, who hires Callie. |
| Amy Miller | Grant’s wife and the third known Night Watcher victim. |
| Eddie McCall | Edinburgh gangster who assists Callie after she is framed. |
| Martin Walsh (“Mr Glass”) | Surveillance equipment vendor who supplies Edinburgh PIs. |
| Alison | Escort who survived an abduction and describes the coastal house. |
| Jennifer Patton | Night cleaner and earlier Night Watcher victim. |
| Gail Hart | Office worker and earlier Night Watcher victim. |
| Donna Burnett | Former English teacher at Galbraith Academy murdered a decade earlier. |
| James Dalgleish | Former Galbraith Academy pupil who confirms Burnett’s abuse of students. |
| Eleanor Joyce | Wife of Philip Joyce who commits suicide after the Elie discovery. |
| Nick Fullerton | Vangelis security installer initially suspected and later cleared. |
| Mia | Eddie McCall’s associate and driver. |
| Isla Sinclair | Seventh victim, killed to frame Callie and Richard. |
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What Drives the Story
| Theme | How the book presents it |
|---|---|
| Institutional failure and police corruption | Early disappearances are dismissed as suicides or voluntary departures. A Chief Inspector conceals his son’s crimes and the department pursues scapegoats rather than internal corruption. |
| The cycle of childhood trauma | Donna Burnett’s abuse of pupils at Galbraith Academy precedes John Taylor’s killings. Callie’s years in six foster homes shape her hyper-vigilant working habits. |
| Domestic and gender-based violence | Women are taken from their own bedrooms. Grant Miller physically abuses Amy, and victims are strapped to a birching table. |
| Vigilantism versus official law | Callie works outside legal boundaries, Eddie McCall enforces underworld justice, and characters use extreme force in self-preservation. |
| Violation of domestic security | A home security firm’s installer keys are used to enter homes, and intruders cut through bedroom window glass. |
Books Like The Night Watcher
Knots and Crosses by Ian Rankin — A foundational Edinburgh crime novel about a serial killer case that intersects with the investigator’s own past.
The Chestnut Man by Søren Sveistrup — A fast-paced serial killer thriller with crime scene signatures, police politics, and buried trauma.
The Chalk Man by C.J. Tudor — A psychological suspense novel linking childhood events to a killer resurfacing years later.
In the Woods by Tana French — An atmospheric procedural with a damaged investigator whose childhood trauma meets an active murder case.
The Whisper Man by Alex North — A psychological thriller about a predator who takes victims at night from their homes, combined with family trauma.
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The Night Watcher summary above covers the main plot, the full cast, and the unresolved final scene. Book two of the Callie Munro thrillers continues from the death of Martin Walsh.
