Halloween 1861. A special train with two carriages steams across the Lake District at night on its way to a place notorious for its record of supernatural incidents. Lighting inside the carriages is poor, and without warning, the lamp goes out in the last compartment of the second carriage, plunging it into darkness. When the special reaches the end of its journey, the passengers pour out on to the station platform. There are almost 60 of them in all, laughing and jostling. 

There’s a literary niche for all tastes including those who think that either Agatha Christie wasn’t funny enough or that PG Wodehouse didn’t feature anywhere near as many baffling murders as he could have. The Case of the Canterfell Codicil is a classic, cozy, locked-room mystery written in the style of an homage to PG Wodehouse.

Ada Hobbes has cleaned for Dr Tindall for many years and begins the morning like any other day. But the house is not empty after all. The blood-covered George Tindall is sprawled across the floor. Detective Inspector Harvey Marmion and Sergeant Joe Keedy arrive to a horrific scene. Someone enjoyed killing Tindall, without a doubt. Their investigation takes them out of London and on the trail of three different women as it emerges that Dr Tindall was not the respectable local GP after all, but a bigamist whose third wife had some very interesting connections in the crime fraternity.

September 1907. George Dillman sets sail from Liverpool to New York on the Lusitania's maiden voyage. Posing as a passenger, Dillman is in fact an undercover detective hired by the Cunard Line to keep an eye out for petty crimes. But after some uneventful days aboard, the ship’s blueprints are stolen and then a body is found. As Dillman works to get to the bottom of the crimes, he makes an unusual friend, first-class passenger Genevieve Masefield, and the two uncover secrets aboard the ship that prove explosive.

Detective Sergeant Chris Waters got the call at 05.29 that July morning. This is it, said DCI Reeve, you'll be first there, it's all yours, you're the crime scene manager. Suddenly, after months of waiting and wondering, Waters finds himself in at the deep end, and alone at the scene of a puzzling murder. As the investigation proceeds, the detectives at Kings Lake Central find themselves visiting familiar places and talking to some familiar faces, while old enmities reappear in the incident room. Before this is over, Chris Waters will need to make a career-changing decision.

One of the Claridge's kitchen porters is found dead—strangled. He was a recent employee who claimed to be Romanian, but evidence suggests he may have been German. Detective Chief Inspector Coburg has to find out exactly who he was, and what he was doing at Claridge's under a false identity. Once he has established those facts, he might get an insight into why he was killed, and who by. 

Lord Edgington of Cranley Hall has some living to do. The next item to cross off on his list of grand ambitions is a serene balloon flight above his palatial estate. But after a man falls to his death, the pleasant pursuit is interrupted, and the esteemed detective suspects foul play. With the help of his hapless grandson, their loyal golden retriever, and a couple of parachutes, Lord Edgington must solve the murder before the meddlesome police arrive to take control of the case. But when all of the suspects seem like such nice chaps, it's awfully difficult to spot a killer.

The Surrays and their five children form a prolific writing machine, with scores of treatises, reviews and crime thrillers published under their family name. Following a convergence of the whole household at their Oxfordshire home, Ruth—the middle sister—decides to spend some weeks there recovering from the pressures of the writing life. Their next return is heralded by the tragic news that Ruth has taken her life after an evening at the Surrays' hosting a set of publishers and writers, one of whom is named as Ruth's literary executor in the will she left behind. 

At a costume party with the dubious theme of 'famous murderers and their victims', the know-it-all amateur criminologist Roger Sheringham is settled in for an evening of beer, small talk and analysing his companions. One guest in particular has caught his attention for her theatrics, and his theory that she might have several enemies among the partygoers proves true when she is found hanging from the 'decorative' gallows on the roof terrace. Noticing a key detail which could implicate a friend in the crime, Sheringham decides to meddle with the scene.

Uncle Willie has come to stay with the Redpaths for the holidays. It is just their luck for him to be found dead the morning after Christmas day, dressed in his Santa Claus costume, seemingly poisoned by his favourite chocolates. Or was there something sinister in the mince pies? If so, was it the ones stashed in his room or those sent to him mysteriously by post? More importantly, since his will was recently redrafted, who stands to gain by this unseasonable crime? 

It is 1864 when Lizzie Martin takes up the post of companion to a wealthy widow who is also a slum landlord. Lizzie is intrigued to learn that her predecessor disappeared, supposedly having run off with an unknown man. But when the girl's body is found in the rubble of one of the recently demolished slums around the prestigious new railway station at St Pancras, Lizzie begins to wonder exactly what has been going on.

June 1933. Independent, young Kitty Underhay has been left in charge of her family’s hotel, The Dolphin, on the tranquil English coast. But when several rooms are broken into and searched, including Kitty’s own, she quickly realizes that something out of the ordinary is afoot at the hotel. Soon, rumors are flying in the cozy town that someone is on the hunt for a stolen ruby. A ruby that Kitty’s mother may well have possessed when she herself went missing during the Great War.

Spring, 1921. Scotland Yard sends Inspector Ian Rutledge to the sea-battered village of Walmer on the coast of Essex, where amongst the salt flats and a military airfield lies Benton Abbey, a grand manor with a storied past. The lady of the house may prove his most bewildering witness yet. She claims she saw a violent murder—but there is no body, no blood. She also insists she recognized the killer: Captain Nelson. Only it could not have been Nelson because he died during the war.

Welcome to Alderley, a magnificent mansion in the heart of the West Country where a grand house party is taking place. The preparations have been made, the guests have been invited, and the staff are on hand. What could possibly go wrong? Let the entertainment begin. The theft of the diamond necklace and the antique pistols might all be explained, but the body in the lake - that really was a puzzle. 'Don't expect me to solve anything,' Inspector Wilkens announced modestly when he arrived to sort out the unpleasantness.

The Earl of Burford can't believe his luck. Rex Ransom, his favourite star from the 'talkies', and his hot-shot producer, Haggermeir, want to film their next feature at Alderley, the family's seventeenth-century country estate. Somewhat less enthusiastic is the Countess, who finds herself hosting an impromptu house party for the incoming Hollywood crowd.