The prettiest flowers can be deadly...

Detective duo Mrs Jameson and Marjorie Swallow are called to investigate when a renowned garden designer suspects that someone is sabotaging her priceless Himalayan Sapphire Lilies, ahead of the 1923 Chelsea Flower Show.

But soon it's not just the flowers that are dying. Rival gardeners, intrepid plant hunters and even King George V himself are caught up in a poisonous bouquet with its roots deep in the mountains of Tibet.

The third in the Marjorie Swallow 1920s murder mystery series requires all her wit, charm and pluck to solve.

Ready for a trip to the sun-soaked French Riviera? But beware-this sunny place for shady people hides dark secrets. In The Riviera Mystery, Marjorie Swallow and Mrs. Jameson embark on a dream vacation aboard the famous Blue Train, only to be swept into a whirlwind of intrigue, deception, and murder.

Invited to stay at the luxurious Villa Beau Rivage, they're surrounded by diamond merchants, film stars, and enigmatic artists. But when a tragic death shatters the party's glitz, Marjorie finds herself drawn into a deadly game where no one can be trusted.

Can Marjorie and Mrs. Jameson uncover the truth? Dive into a world of 1920s glamour, mystery, and suspense. The Riviera Mystery is the fourth book in the 1920s Murder Mystery series.

A hidden masterpiece. A secret buried for 500 years. And one woman determined to uncover the truth. When London tour guide Helen Oddfellow meets a historian on the trail of a lost manuscript, she's intrigued by the mystery - and the man. But the pair are not the only ones desperate to find the missing final play by sixteenth century English playwright Christopher Marlowe. What starts as a literary puzzle quickly becomes a quest with deadly consequences.

When Helen realises the play hides an explosive religious secret, she begins to understand how much is at stake. Relying on her quick wits, she battles far-right thugs, eccentric aristocrats and an ancient religious foundation, each with their own motives for getting their hands on the manuscript. There is a price to pay for secret knowledge, but how high is too high?

Shortlisted for the Virago/The Pool New Crime Writer award.

A Dickensian murder mystery. A brutal modern-day gang. Can Helen Oddfellow outwit an old enemy - or will she be his next victim?

When literary researcher Helen Oddfellow finds an old newspaper cutting in an antiquarian bookshop, she uncovers a mystery dating back 200 years. Her quest to find the real woman behind one of Charles Dickens' best-loved characters takes an unexpected turn, when the bookshop owner goes missing.

Helen befriends his distraught teenage daughter as they try to find the missing man. As they discover, the marshes of north Kent are home to a criminal gang more brutal than anything Dickens imagined. Murky money, royal connections and desperate people link the past with the present. But it's the unexpected return of an old enemy that puts Helen herself in mortal peril.

Folly Ditch is the intriguing new mystery featuring literary sleuth and London tour guide Helen Oddfellow.

Long-listed for the Stockholm Writers' Festival 2022 First 5 Pages prize.

Everyone at the party had a secret. Someone killed to keep theirs.

London, 1922. Draper's daughter Marjorie Swallow is 24, independent, and determined to live life to the full. A secretarial post with enigmatic American detective Mrs Jameson looks just the ticket. And soon she's in the thick of it.

When the bohemian party they attend ends in murder, there is no shortage of suspects. Half of Bloomsbury wanted Mrs Norris dead - but who wielded the knife? Was it the handsome but troubled artist? The vivacious young actress? Or even the aristocratic lady novelist? Marjorie and Mrs Jameson must find the true killer to save an innocent man from the noose. From the garden squares of Bloomsbury to the seedy backstreets of Soho, they navigate the glamour and peril of Jazz Age London in a thrilling story of secrets and lies. Marjorie needs all her wit, pluck and charm in this perilous hunt for the killer.

This classic murder mystery will keep you guessing to the very last page.

Flappers meet gangsters at the hottest nightclub in Soho. When a night out at the glamorous Harlequin Club ends in a suspicious death, apprentice sleuth Marjorie Swallow goes undercover as a dance hostess to find out what really happens behind the glitz. Society secrets and ruthless drugs gangs come to light and Marjorie has to call on all her pluck and charm to solve the mystery without becoming a victim. The Soho Jazz Murders is the second in the 1920s murder mystery series featuring the irrepressible Marjorie Swallow.

A literary obsession. An angry young man with a gun. And one woman trying to foil his deadly plan.

When Helen Oddfellow starts work as a lecturer in English literature, she's hoping for a quiet life. But trouble knows where to find her.

There's something wrong with her new students. Their unhappiness seems to be linked to their flamboyant former tutor, Professor Petrarch Greenwood, who holds decadent parties in his beautiful Bloomsbury apartment.

When Helen is asked to take over his course on the Romantic poet William Blake, life and art start to show uncomfortable parallels. Disturbing poison pen letters lead down dark paths, until Helen is the only person standing between a lone gunman and a massacre.

As Helen knows too well, even dead poets can be dangerous.

THE PEACOCK ROOM is the intriguing follow-up to the acclaimed thriller UNLAWFUL THINGS, which introduced the literary sleuth Helen Oddfellow.

A theatrical curse. A shocking discovery in the cathedral. Only one woman can unravel the mystery and prevent more bloodshed.

When Helen Oddfellow goes to Canterbury for the opening of an Elizabethan play unseen for 400 years, she is expecting an exciting night. But the performance is disrupted by protests, then a gruesome discovery in the cathedral crypt draws her into a desperate hunt for a murderer.

Is the play cursed? The actors think so, but Helen doesn't believe in curses. As friends go missing and Helen herself is threatened, she pursues the clues through the ornate tombs of the cathedral and the alleyways of the ancient city.

Mysteries from the distant and not-so-distant past are exposed.

Can Helen find the killer - before he kills again?

The Crimson Thread is the latest in the series of mysteries to feature the literary sleuth Helen Oddfellow.