Agatha Christie was born between the middle class and wealthy class in Torquay, Devon on September 15, 1890. Her mother, Clara Boehmer was from Belfast, Northern Ireland. She was born in 1854 and passed away on January 1, 1926. And her father, Fredrick Alvah Miller, was a stockbroker from New York in the United States. He was born in 1846 and passed away in November of 1901. Agatha's mother believed in starting an education for her children when they were young. She encouraged Agatha to start writing at a very young age. As Agatha grew older she grew a strong passion for writing. 

Agatha was only 11 years old when she started her writing journey. She was lying in bed sick with influenza when her mother told her to start writing down her thoughts and the stories she wanted to tell other people. She decided to write a poem that would later be printed in one of the local London newspapers. She was a very successful woman at such a young age, and she only grew from there. This is when her career in writing took off. 

Agatha Christie was home schooled up  until she was 15 years old. She then switched and studied at Miss Guyer's Girls' School. After that she finished off her education at Mrs. Dryden's finishing school located in Paris. Agatha's mother taught her how to read, write, and even play music. 

Agatha Christie was a nurse during World War 1, and this is when she started writing her detective fiction novels at the same time. She was a VAD (Voluntary Aid Detachment) nurse in Torquay's Field Hospital. Christie later transferred to the dispensary in Town Hall. Agatha was inspired there and she wrote her first detective novel, "The Mysterious Affair at Styles", which would be published after the war. This book is when her biggest character, Hercule Poirot, gets introduced. While she was working as a nurse during the war she met a Belgian Policeman named Jacques Hornais. People believe that he may or may not be who Hercule Poirot is. 

In 1914 she married Archibald Christie who was an officer in the military and he was a business man. In 1919 they had a child named Rosalind. Later he fell in love with another woman. Archibald was cheating on Agatha Christie. Archibald told her he has been seeing another women and that is how Agatha found out. She had no idea he was cheating. The lady's name was Nancy Neele and she happened to be Archibald's secretary. 

On December 3, 1926 Agatha Christie left her home after getting into a little disagreement with her husband, Archibald Christie.  The disagreement started because he wanted a divorce because of his affair and she did not want to talk about it because she was dealing with her mother's death. She took their Morris Cowley car and drove it a few miles from the house.  The next day the car was found crashed all by itself by a lake. And Agatha was nowhere to be seen. After 11 days Agatha was found safe and alive at the Harrogate Spa Hotel. She fled from her home from a nervous breakdown, the death of her mother, and the embarrassment of her husband having an affair. It is unknown why she chose to runaway to the Harrogate Spa Hotel.  

Rosalind is the daughter of Agatha and Archibald Christie. Rosalind was born on August 5, 1919. She was born in Torquay, Devon. She was only 7 years old when her mother, Agatha, and father, Archibald, were getting divorced. Rosalind and Agatha both loved to read and write books with each other. Literature is something they could bond over. 

Agatha met Sir Max Mallowan while she went on an archaeological dig in March of 1930. She later married him in a short 6 months in September. Some of her books are inspired by him. She would go on his work trips with him. He worked as an archaeologist. One of the trips they took a train, and that is where she got the idea to write "A Murder on the Orient Express". The setting of that book was influenced by her actually traveling on the Orient Express.  

Agatha Christie passed away due to natural causes. She passed on January 12, 1976. She passed away peacefully in her home located at Winter Brook House. She died at the age of 85. She lived a pretty successful life. She wrote 66 detective novels, over 150 short stories, created iconic characters, and she set a play record. The play, "The Mousetrap", is the longest running play still in history. It has been playing since 1952. The play has been running for over 68 years. 

Agatha Christie was a phenomenal author. Her life strongly influenced the way she wrote her books. Agatha had a strong love for archaeology which had a strong influence on her mystery novels. She loved adventures, and it showed in her writing. She traveled the world. Agatha took part in archaeological digs with her second husband Max Mallowan. She met many people throughout her life that are some of the most important characters in her novels. Agatha Christie was and still is a well known author. She is the "Queen of Crime".