There are 21 books in the Cotswold Mysteries series. The newest book is A Discovery in the Cotswolds which came out in 2023.

1
A Cotswold Killing

Book cover of A Cotswold Killing
Nestled in the fertile hills of the Cotswolds, the village of Duntisbourne Abbots is a well-kept secret: beautiful, timeless and quintessentially English. When recently widowed Thea Osborne arrives to house-sit for a local couple, her only fear is that three weeks there might prove a little dull.

Her first night's…
When you buy books, we may earn a commission that helps keep our lights on (or join the rebellion as a member).

2
A Cotswold Ordeal

Book cover of A Cotswold Ordeal
Thea Osborne and her spaniel Hepzibah embark on their second house-sitting commission with few worries. Despite her first disastrous venture, in which she became drawn into a murder case, Thea is convinced that lightning will not strike twice, and arrives at idyllic Frampton Mansell with renewed enthusiasm. However it seems…

3
Death in the Cotswolds

Book cover of Death in the Cotswolds
Thea Osbourne is thanking her lucky stars. After two disastrous housesitting incidents in which she unwittingly became embroiled in murder and mayhem, she is only too happy to have a bit of peace and quiet. The only positive thing that came out of her experiences, she thinks, is her blossoming…

4
A Cotswold Mystery

Book cover of A Cotswold Mystery
Despite the catastrophic outcomes of her previous house-sitting commissions, Thea Osborne, accompanied by her trusty spaniel, Hepzie, is truly convinced nothing can go wrong on her next assignment in the charming village of Blockley.

The Montgomerys have asked her to look after their house while they take a much needed…

5
Blood in the Cotswolds

Book cover of Blood in the Cotswolds
Thea Osborne and her faithful spaniel, Hepzie, have taken on another house-sitting assignment, this time in the very quiet village of Temple Guiting. Detective Superintendent Phil Hollis is looking forward to visiting for a night or two and celebrating the couple's one year anniversary, but a slipped disk in Phil's…

6
Slaughter in the Cotswolds

Book cover of Slaughter in the Cotswolds
Thea throws herself into house-sitting for Babs and Cedric Angell in Lower Slaughter following her beloved father's death - anything to keep her busy and away from some of her rather difficult relatives. And while feeling lonely, keeping the house in order and looking after the Angell's menagerie of animals…

7
Fear in the Cotswolds

Book cover of Fear in the Cotswolds
Following a string of disastrous house-sitting assignments, and with troubles in her recent personal life, Thea Osborne is understandably apprehensive about her latest commission: a wintery month in an isolated farmhouse with only an assortment of animals, including her loyal spaniel Hepzie, for company. With the summer lushness of the…

8
A Grave in the Cotswolds

Book cover of A Grave in the Cotswolds
Undertaker Drew Slocombe is not having a good day. His business is failing, the car needs an MOT and he's driving 120 miles to the Cotswolds to carry out the late Greta Simmonds' final wishes. Unfortunately, when he gets there, a string of bureaucratic mistakes means that he's now the…

9
Deception in the Cotswolds

Book cover of Deception in the Cotswolds
In the wake of a series of unfortunate experiences house-sitting in the Cotswolds, Thea Osborne, accompanied by her spaniel Hepzibah, is perhaps over-optimistic about the English summertime and the possibilities of her latest assignment - house-sitting for transatlantic reptile breeder Harriet Young. However the region's bucolic charms prove to be…

10
Malice in the Cotswolds

Book cover of Malice in the Cotswolds
Thea Osborne, accompanied by her beloved spaniel Hepzie, has had her fair share of unfortunate occurrences while house-sitting, and her new assignment for the mysterious Yvonne Parker is no exception. The isolated and somewhat unsettling village of Snowshill has Thea on edge as soon as she arrives, and Hyacinth House…

11
Shadows in the Cotswolds

Shadows in the Cotswolds
When Thea Osbourne agrees to house sit for Oliver Meadows as a favor to her mother, she expects a few days peace and quiet. But as usual, Thea quickly finds herself at the center of a dark mystery when she discovers a dead body in the gardens of the house.…

12
Trouble in the Cotswolds

Book cover of Trouble in the Cotswolds
Thea Osborne hopes to spend a quiet Christmas house sitting for the Shepherds in the picturesque Cotswold village of Stanton. Walks in the local countryside with the dogs and perhaps a meal in the pub are all the excitement she wants. When her arrival at the village coincides with the…

13
Revenge in the Cotswolds

Revenge in the Cotswolds
Thea Osborne, Cotswold house-sitter with an infamous reputation for getting mixed up in crime, is determined to avoid trouble this time. Her latest commission in the village of Daglingworth seems straightforward, with most of her time spent looking after an old corgi and a hibernating tortoise.

Thea is ready for…

14
Guilt in the Cotswolds

Book cover of Guilt in the Cotswolds
Thea Osborne's latest house-sitting assignment is a little different to the rest. Along with her spaniel, Hepzie, Thea finds herself in the village of Chedworth. She is tasked with creating an inventory of Rita Wilshire's possessions, requested by her son, Richard Wilshire, after moving her into a care home. All…

15
Peril in the Cotswolds

Book cover of Peril in the Cotswolds
Thea Slocombe is trying to settle into normal family domestic life with Drew and his two children in Broad Campden. But any sense of cosy domesticity is shattered when Thea finds the body of a neighbour. No longer a house-sitter, Thea has no choice but to stay in the village…

16
Crisis in the Cotswolds

Book cover of Crisis in the Cotswolds
Thea and Drew have been married for a year and are settled in the village of Broad Campden, but Thea is chafing at the domestic routines she is expected to devote herself to, missing the novelty and adventure that house-sitting used to bring. When a routine burial exposes the secrets…

17
Secrets in the Cotswolds

Book cover of Secrets in the Cotswolds
Thea Slocombe is tired of having to entertain Drew's children through the long summer holiday while he works, so keenly accepts a commission to watch over a house in Barnsley. However, her return to house-sitting is far from relaxing as on her first night she finds a fugitive woman hiding…

18
A Cotswold Christmas Mystery

Book cover of A Cotswold Christmas Mystery
It's Christmas, and things are looking good at the Slocombe house. Thea's daughter Jessica has come to stay, much to her stepdaughter Stephanie's delight. But then things take a turn for the worse. A local family, the Frowses, find themselves increasingly harassed by an aggressive landlord. When Beverley Frowse goes…

19
Echoes in the Cotswolds

Book cover of Echoes in the Cotswolds
As spring returns to the Cotswolds, so too does Thea Solocombe to house-sitting. She has agreed to look after Lucy Sinclair's new home in Northleach while Lucy is away. Thea soon meets several of the locals and the neighbours who seem to irritate Lucy so much, and comes to the…

20
Betrayal in the Cotswolds

Book cover of Betrayal in the Cotswolds
A handsome, if slightly shabby, stone house in Upper Oddington is home to Umberto Kingly, as well as his three dogs, and will be Thea Slocombe's latest house-sitting assignment. Without even a local shop, Thea expects the location to be one of her quietest, until the serene atmosphere is shattered…

21
A Discovery in the Cotswolds

Book cover of A Discovery in the Cotswolds
Thea Osborne reconnects with her friend Emmy while on a visit to the church in Baunton, near Cirencester with her stepdaughter Stephanie. Emmy, now married to local farmer Nick Weaver, asks Thea to help them find their missing niece, Ginny. Before Thea can get started, she stumbles upon the recently-killed…