Details
What is it?
In the hack if you read a book and you think it doesn't make sense then you can try too think of what was really going on and question the plot eg: deadly nightshade was the poison that put Snow White in a coma.
What sort of space will you need?
Any were will do
When could it take place?
Any time
How?
So you pick a book and a plot problem then look into it or research