In the summer of 1932, Maisie Dobbs' career takes an exciting new turn when she accepts an undercover assignment directed by Scotland Yard's Special Branch and the Secret Service. Posing as a junior lecturer, she is sent to a private college in Cambridge to monitor any activities "not in the interests of His Majesty's government". She soon finds herself investigating a web of activities being conducted by the emerging Nazi Party.

On the way to see a client, Maisie Dobbs witnesses a man commit suicide on a busy London street. The following day, the prime minister's office receives a letter threatening a massive loss of life if certain demands are not met - and the writer mentions Maisie by name. After being questioned and cleared by Detective Chief Superintendent Robert MacFarlane of Scotland Yard's elite Special Branch, she is drawn into MacFarlane's personal fiefdom as a special adviser on the case.

In the midst of the hop-picking season in the village of Heronsdene, Kent, Maisie Dobbs, Psychologist and Investigator, undertakes an assignment from James Compton, son of her long-time supporter, Lady Rowan Compton, to look into aspects of a land purchase on his behalf. Quickly drawn into the local community, Maisie soon becomes involved in an effort to discover the source of petty crime in the area as well as a spate of fires that has blighted Heronsdene for years.

To the costermongers of Covent Garden Eddie Pettit was a gentle soul with a gift for working with horses. When Eddie is killed in a violent accident, the grieving costers are skeptical about the cause of his death. Who would want to kill Eddie - and why? Maisie Dobbs' father, Frankie, had been a costermonger, so she had known the men since childhood. She remembers Eddie fondly and is determined to offer her help. But it soon becomes clear that powerful political and financial forces are equally determined to prevent her from learning the truth behind Eddie's death.

London, 1931. The night before an exhibition of his artwork opens at a famed Mayfair gallery, the controversial artist Nick Bassington-Hope falls to his death. The police rule it an accident, but Nick's twin sister, Georgina, isn't so sure. For help with this case, Georgina seeks out Maisie Dobbs, psychologist and investigator.

The year is 1933. Maisie Dobbs is contacted by an Indian gentleman who has come to England in the hopes of finding out who killed his sister two months ago. Scotland Yard failed to make any arrest in the case, and there is reason to believe they failed to conduct a thorough investigation. The case becomes even more challenging when another Indian woman is murdered just hours before a scheduled interview. Meanwhile, unfinished business from a previous case becomes a distraction, as does a new development in Maisie's personal life.

Spring 1937. In the four years since she left England, Maisie Dobbs has experienced love, contentment, stability - and the deepest tragedy a woman can endure. Now all she wants is the peace she believes she might find by returning to India. But her sojourn in the hills of Darjeeling is cut short when her stepmother summons her home to England; her aging father, Frankie Dobbs, is not getting any younger.

Maisie Dobbs is back, and this time she has been hired to find a wealthy grocery magnate's daughter who has fled from home. What seems a simple case at first becomes complicated when Maisie learns of the recent violent deaths of three of the heiress's old friends. Is there a connection between her mysterious disappearance and the murders? Who would kill such charming young women? As Maisie investigates, she discovers that the answers to all her questions lie in the unforgettable agony of The Great War.

It's early 1938, and Maisie Dobbs is back in England. On a fine yet chilly morning, as she walks toward Fitzroy Square - a place of many memories - she is intercepted by Brian Huntley and Robert MacFarlane of the Secret Service. The German government has agreed to release a British subject from prison, but only if he is handed over to a family member. Because the man's wife is bedridden and his daughter has been killed in an accident, the Secret Service wants Maisie - who bears a striking resemblance to the daughter - to retrieve the man from Dachau....

When Catherine Saxon, an American correspondent reporting on the war in Europe, is found murdered in her London digs, news of her death is concealed by British authorities. Serving as a linchpin between Scotland Yard and the Secret Service, Robert MacFarlane pays a visit to Maisie Dobbs, seeking her help. He is accompanied by an agent from the US Department of Justice - Mark Scott, the American who helped Maisie get out of Hitler’s Munich in 1938. MacFarlane asks Maisie to work with Scott to uncover the truth about Saxon’s death. 

When listeners last heard Maisie Dobbs, it was 1938, and the world was on the brink of war. Maisie herself was on a dangerous mission inside Nazi Germany, where she encountered an old enemy and the Führer himself. In In This Grave Hour, a year has passed, and Maisie is back home in England - yet neither she nor her nation is safe. Britain has just declared war on Germany and is mobilizing for the devastating battle ahead.

Spring 1940. With Britons facing what has become known as "the Bore War" - nothing much seems to have happened yet - Maisie Dobbs is asked to investigate the disappearance of a local lad, a young apprentice craftsman working on a "hush-hush" government contract. As Maisie's inquiry reveals a possible link to the London underworld, another mother is worried about a missing son - but this time the boy in question is one beloved by Maisie.

Sussex, England, 1929. Mydworth is a sleepy English market town just 50 miles from London. But things are about to liven up there, when young and handsome Sir Harry Mortimer returns home from his diplomatic posting in Cairo, with his beautiful and unconventional American wife, Kat. No sooner have the two arrived, when a jewel robbery occurs at Harry's aunt's home - Mydworth Manor. The police are baffled and overwhelmed with the case. But Harry and Kat have an edge in the hunt for the dangerous culprit.

When a prominent family's daughter flees sleepy Sussex to seek a career on the stages of a glittering West End, Harry and Kat are asked to check in on the young woman. But the two of them soon discover that there is a much bigger danger to the woman and her family than mere acting dreams being crushed. Nathaniel Parker, born in 1962, graduated from the London Academy of Music and Dramatic Art and went on to join the Royal Shakespeare Company. His television career began in 1988 when he played Flying Officer 'Flash' Gordon in the LWT mini-series "Piece of Cake".

Georgie's best friend, Belinda, inherits a spooky old house in Cornwall and asks Georgie to go with her to inspect the property. When they arrive, they meet Rose, a woman Belinda knew as a child when she spent her summers with her grandmother in Cornwall. Belinda never liked Rose, who has always been bossy and a bit of a bully, but when Belinda's house proves to be uninhabitable, Rose invites them to stay with her. Rose is now married to Tony Summers, Belinda's childhood crush, and lives in the lovely house on the cliffs that he has inherited.