She was born in Devon in 1890
She was 85 by the time she died in 1976
In her lifetime she wrote 66 detective novels
During the First World War she worked in a hospital
In 1926 she mysteriously disappeared for 10 days and no one really knows where she was during that time.
As well as detective novels she also wrote 14 collections of short stories and 6 romances.
I feel she provided the world with a lot of reading and some good reading too as she has sold in the region of 2 billion copies of her novels. They must be good.