Detective Inspector Declan Walsh Books in Order

Murders committed years apart suddenly line up into one pattern, and Declan Walsh realises someone has been building a conspiracy for decades. Four people took parts of the secret to their graves, and one grave is still out there. Walsh has to find it first.

A City banker is killed with a wet playing card pinned to his body and a toy water pistol nearby. Declan Walsh traces the clue back to a group of old friends and a game that never really ended. Someone is punishing the winners.

A masked highwayman is robbing the wealthy across London, and the crimes feel designed as a message. When a senior minister is held up, Declan Walsh is forced into a high-profile chase. To catch the thief, he has to understand the story they’re reenacting.

A decade-old corpse is found in the basement of a hidden casino, and the victim turns out to be a famous American poker player. Declan Walsh steps into a world of high stakes and higher lies. The house always wins, unless Walsh changes the rules.

A serial killer nicknamed the Red Reaper seems to be back, and Declan Walsh can’t afford to be wrong. As new victims appear, he has to separate copycat theatrics from the real monster. The hunt becomes personal when the killer starts targeting the investigation.

London cab drivers are being murdered, and the killer leaves a crooked cane and strange clues behind. Declan Walsh works the case street by street, trying to link the deaths before fear takes over the city. One wrong turn could make him the next fare.

At an elite anti-aging event, a sponsor is found dead in a cryotherapy chamber and Declan Walsh is pulled into the world of biohacking and high-stakes ambition. Everyone claims they’re chasing progress. Walsh has to prove when “progress” becomes murder.

A new disappearance mirrors a past case that still haunts Declan Walsh’s team, down to the posies left behind. Old assumptions start to crack as the pattern returns. Walsh has to move fast, because this time the victim might still be alive.

A corpse dressed as a Roman soldier is found with an antique weapon, just as London celebrates its history. Declan Walsh follows the clues through reenactors and collectors, where obsession can turn deadly. Someone is using the past as cover for murder.

Declan Walsh walks into a new remit and a new office, only to be handed a murder at a high-profile art exhibition. The victim’s connections make the case radioactive. Walsh has to sift art-world glamour from ugly motive before the killer strikes again.

The Last Chance Saloon is changing, and Declan Walsh is already under pressure when a Fleet Street legend is kidnapped. The case collides with media power and political ambition, where stories are weapons. Walsh has to find the victim before the narrative becomes fatal.

A body hidden for decades is discovered in an underground cell at Temple Church, and Declan Walsh is pulled into a mystery layered with history and modern secrets. As he traces who wanted the victim erased, the present-day danger grows real.

A gruesome murder echoes London’s most infamous case and Declan Walsh is forced into a race against a copycat killer. The clues feel staged, the public is watching, and panic spreads fast. Walsh has to stop the pattern before history repeats itself.

Days before Christmas, people across London start collapsing after wearing Father Christmas hats. Declan Walsh tracks the poisoned trail from the streets to the people profiting from panic. With festive crowds everywhere, he has to stop the next death quickly.

Gangster Johnny Lucas insists he knows who’s killing his people, and Declan Walsh can’t ignore him. As bodies fall around a boxing club and old loyalties resurface, Walsh must untangle truth from delusion. The man asking for help may also be the threat.

A body is found at a remote research base in the Peak District, and the case yanks Declan Walsh back toward his military past. With an old mentor involved and secrets buried behind security fences, Walsh has to face what he thought he’d left behind.

A famous actor is killed by an arrow during a Robin Hood convention, and Declan Walsh has a room full of suspects who all had the skill to do it. As jealousies and grudges surface, Walsh learns the story behind the costume is far from playful.

A killer is working London with a signature that feels like a message, and Declan Walsh is running out of time to decode it. As the bodies mount, the case drags him into the city’s darker corners and forces hard choices to keep his team safe.

A high-profile theft and a missing woman pull Declan Walsh into a case where appearances are carefully managed. The trail runs through London’s wealth and old connections, with a “magpie” thief at the centre. Walsh has to catch them before the story turns bloody.

A man is found murdered in a quiet London square, and the “angels” that watch over it are defaced. Declan Walsh’s investigation uncovers money, motives, and secrets that reach far beyond the crime scene. Someone is determined to silence him.

When murder hits the world of London music, Declan Walsh has to navigate fame, money, and people who know how to control a narrative. The case spirals fast, and every interview brings a new contradiction. Walsh needs the truth before the next encore becomes a crime scene.

A body turns up in Heathrow’s cargo terminal, and the evidence points in several dangerous directions. Declan Walsh is pulled into a case involving military ties and international pressure. The closer he gets, the more he becomes the target.

A death with ritual markings puts Declan Walsh on edge, especially when the clues point to a group that knows how to hide in plain sight. The investigation becomes a race through secret meetings and public lies, with another victim in the sights.

A death at a celebrity chef’s restaurant drops Declan Walsh into a cutthroat world of money and ego. With parts of his team away, he’s forced to work the case short-handed while the pressure climbs. Another victim could be served up at any moment.

Detective Inspector Declan Walsh receives a letter that drags him back to a murder from twenty years earlier. As a political campaign heats up, a new killing makes the old case urgent again. Walsh has to protect a suspect while hunting the truth.