Conversation so far:
Where was Georgette Heyer born?
Georgette Heyer was born in Wimbledon, London.
Did Georgette Heyer show interest in writing at an early age?
When she was 17, Georgette Heyer began a serial story to amuse her brother Boris.
What was Georgette Heyer's story about that she wrote when she was 17?
The Black Moth was about the adventures of a young man who took responsibility for his brother's card-cheating, was released in 1921.
Did Georgette Heyer achieve success at an early age?
The Black Moth was Heyer's debut novel, published when Heyer was nineteen. It was a commercial success.

Question: was this book a continuation of the serial story she wrote for her brother?
Self-contained rewrite: Was These Old Shades a continuation of the serial story Georgette Heyer wrote for her brother?