When Violet is hired to prove the innocence of a convicted murderer, Cassie discovers that not only is an innocent man's life at stake, but also that solving a 10-month-old murder has its own unique challenges. But what initially seems like it might be a straightforward case quickly becomes more complex with the discovery of a secret computer file and an encryption even Violet can't crack.

After a car accident ended her medical career before it even started, Cassie moved to London on a whim, expecting to see the sights and live the typical tourist backpacker lifestyle. Instead she finds herself accompanying a French private detective, Violet Despuis, as they attempt to find out who poisoned four people in the middle of London. Cassie's life soon includes this crazy detective, an ancient landlady with a curious past, a mischievous orange cat who likes going for walks on a leash, and a super hot pathologist that Cassie is sure is out of her league.

Robin is finally settling into Spellford Cove. Business is booming, and as the weather gets colder, her relationship with Hunter seems to be heating up. And she finally gets some answers about her biological father. But when a friend of Elsa's is murdered, Robin decides to get involved. After all, she does have a bit of experience in solving murder cases. As she gets closer to solving the case, however, Robin soon finds herself in the killer's crosshairs. And it turns out maybe her father hasn't quite learned that no means no after all.

Summer, 1921. Lady Eleanor Swift, the best amateur sleuth in the country, is delighted to be in charge of the prize-giving at her village summer fair. But the traditional homemade raft race takes a tragic turn when the local undertaker, Solemn Jon, turns up dead amongst the ducks. Jon was the life of any party and loved by the entire village. Surely this was simply an awful accident? But when a spiteful obituary is printed in the local paper, Eleanor realizes there may be more to Jon’s death than first thought.

Just when Robin thought things were settling down a bit in Spellford Cove, she finds herself mired in a murder investigation once more when a customer of hers is poisoned. Then just to make matters worse, a photo of Queen of Tarts cheesecake in front of the body is printed on the front page of the local paper. 

1934. Accidental amateur sleuth Kitty Underhay is being escorted by ex-army captain Matthew Bryant on an errand of mercy, as she takes a basket of grapes to her nemesis Mrs. Craven, who is recuperating from a recent operation. But their arrival at Elm House Nursing Home coincides with the mysterious death of Lady Wellings, a long-term resident.

The traveling carnival has made its stop in Sinful and everyone is ready for thrilling rides, challenging games, and most importantly, funnel cake. But when a man is murdered in the funhouse and Emmaline LeBlanc is knocked unconscious so the killer can escape, the good times are over. Carter is beside himself wanting to hunt down the man responsible for putting his mother in the hospital, but he can’t investigate when he’s related to one of the victims. 

November 1933. Amateur sleuth-cum-dutiful granddaughter Kitty Underhay stifles a sigh of boredom as she attends the annual Hoteliers' Association Dinner and Dance on behalf of her grandmother, the proprietress of the Dolphin Hotel. She hopes the company of ex-army captain Matthew Bryant will enliven the otherwise dull evening. That is, until bullish and overbearing local councilor Harold Everton drops dead into his bowl of consommé. 

August, 1940. On the streets of London, locals watch with growing concern as German fighter planes plague the city’s skyline. But inside the famous Ritz Hotel, the cream of society continues to enjoy all the glamour and comfort that money can buy during wartime - until an anonymous man is discovered with his throat slashed open. Detective Chief Inspector Coburg is called in to investigate, ably assisted by his trusty colleague, Sergeant Lampson. 

London, 1925. With their band the Dizzy Heights, jazz musicians Ivor ‘Skins’ Maloney and Bartholomew ‘Barty’ Dunn are used to improvising as they play the Charleston for flappers and toffs, but things are about to take a surprising turn. 

London,1925. Scotland Yard Detective Inspector Devenand Hunter finds himself in the middle of a series of upper-class deaths in London. Bright young people are being extinguished in their favorite night spots, from a sleazy private jazz club to the Savoy ballroom. Dev knows just the person to help him navigate the treacherous society waters: Lady Adelaide Compton, a marquess's daughter and widow of a Great War hero. Unfortunately, he has put her in jeopardy once before, nearly leading him to turn in his warrant card.

When Cassie Coburn moved to London, she never thought she'd be involved in a quadruple homicide. After a car accident ended her medical career before it even started, Cassie moved to London on a whim, expecting to see the sights and live the typical tourist backpacker lifestyle. Instead she finds herself accompanying a French private detective, Violet Despuis, as they attempt to find out who poisoned four people in the middle of London.

Gloucestershire, 1925. A week-long house party in the country - why not? Lady Adelaide has nothing else to do, now that her year of mourning for her unfaithful husband is up and her plans to rekindle her romantic life have backfired. But when her hostess is found dead on the conservatory floor, Addie knows just who to call - Detective Inspector Devenand Hunter of Scotland Yard. Addie and Dev must work together to stop another murder, and they have some help thanks to Rupert, Addie's late and unlamented husband. Rupert needs to make amends for his louche life on earth.

An ancient curse seems to be causing bad luck in the charming village of Ballydehag, Ireland - witch Quinn Callahan’s new home. When someone is murdered, is it the curse? Or, is there a very human murderer on the loose? Moving to a small Irish village was supposed to keep the middle-aged witch out of trouble. Yeah, that didn't happen. Quinn and her bookish vampires must find the real killer and end the curse before someone else dies.

Winter, 1920. Amateur sleuth Lady Eleanor Swift is feeling festive. She is playing host to the entire village at Henley Hall. She’s also purchased perfect presents for each of her household - not forgetting the biggest bone in the butcher’s shop for her partner in crime, Gladstone the bulldog - and is looking forward to celebrating her first English country Christmas. As snowflakes fall, Eleanor is cheering on contestants in the traditional Christmas fun run in the grounds of the hall. But tragedy strikes when one of the runners drops dead at the finish line.