"The Secret of Chimneys" is a detective novel by Agatha Christie, first published in 1925. The story follows Anthony Cade, a charming adventurer who is asked to deliver a manuscript to a London publisher. However, he soon finds himself embroiled in a web of intrigue and murder.

The novel begins with the murder of Count Stylptich, the former king of Herzoslovakia. A letter found on his body implicates his secretary, Ladislaus Malinowski, as the killer. However, Cade discovers evidence that suggests the letter may have been forged, and that Malinowski may have been framed. Cade's investigation takes him to Chimneys, the estate of Lord Caterham, where he becomes embroiled in a series of murders and a conspiracy involving the missing crown jewels of Herzoslovakia.

As Cade delves deeper into the mystery, he is joined by Bundle Brent, a young woman who is determined to uncover the truth behind the murders. Together, they uncover a complex plot involving a group of international conspirators, each with their own hidden motives.

The book is notable for its blend of political intrigue, adventure, and romance. Christie's characteristic wit and clever plot twists keep the reader guessing until the very end. "The Secret of Chimneys" also features a cast of memorable characters, including the cunning adventurer Anthony Cade and the plucky and intelligent Bundle Brent.

Overall, "The Secret of Chimneys" is a gripping and entertaining mystery novel that will appeal to fans of Agatha Christie's work, as well as to readers who enjoy tales of political intrigue, adventure, and romance.