"The Mysterious Affair at Styles" is the debut novel of famed British author Agatha Christie, first published in 1920. The book introduces readers to Christie's most beloved character, the iconic detective Hercule Poirot.

The story takes place in the English countryside at Styles Court, where the wealthy heiress Emily Inglethorp resides with her much younger husband Alfred. When Emily is found dead in her bedroom, suspicion falls on everyone in the household, including her family members, servants, and even her new husband. Enter Hercule Poirot, who is called in to solve the case and unravel the web of lies and deceit that surround the death of Emily Inglethorp.

As Poirot begins his investigation, he encounters a colorful cast of characters, including Emily's two sons, her loyal nurse, and a mysterious stranger who claims to be her confidant. The plot thickens as the suspects begin to reveal their motives, and Poirot must use his trademark intelligence and intuition to uncover the truth.

"The Mysterious Affair at Styles" is a classic whodunit that showcases Christie's mastery of the genre. Her writing is sharp, witty, and engaging, drawing readers in with a carefully constructed plot that keeps them guessing until the very end.

The novel also serves as an introduction to Poirot, who would go on to become one of Christie's most beloved and enduring characters. Poirot is a fastidious and eccentric detective, with an impeccable sense of style and a sharp intellect that he uses to solve even the most complicated cases. Through his eyes, readers are transported to a world of glamour, intrigue, and suspense, where the smallest details can hold the key to solving a crime.

Overall, "The Mysterious Affair at Styles" is a must-read for fans of classic detective fiction and anyone who loves a good mystery. With its well-drawn characters, intricate plot, and unexpected twists and turns, it is a testament to Agatha Christie's enduring legacy as one of the greatest crime writers of all time.