Conversation so far:
When did Mary Shelley write Frankenstein?
Mary Shelley remembered in 1831.
What did she have to do with Lake Geneva?
close to Lake Geneva at the village of Cologny; Percy Shelley rented a smaller building called Maison Chapuis.
what did they do while they were there?
They spent their time writing, boating on the lake, and talking late into the night.
.
What did they write while they were there?
Byron to propose that they "each write a ghost story".
Did they write the ghost story?
she became possessed by her imagination as she beheld the grim terrors of her "waking dream", her ghost story.
how did that end for her?
She began writing what she assumed would be a short story.
With Percy Shelley's encouragement, she expanded this tale into her first novel, Frankenstein.
was Frankenstein successful?
The story of the writing of Frankenstein has been fictionalised several times and formed the basis for a number of films.

Question: how many films?
Self-contained rewrite: How many films were formed on the basis of Frankenstein?