Books like Beneath the Attic
V. C. Andrews
Beneath the Attic is 392 pages, about 7 hours 11 minutes at 250 words a minute.
12 books to read next
How long each takes
My Sister, the Serial Killer 4.4 h 
Cometh the Hour 9.7 h 
Be Careful What You Wish For 7.3 h 
The Wife Upstairs 5.9 h 
Pachinko 9.4 h 
No Time for Goodbye 8.0 h 
Sister, Sister 6.8 h 
Hideaway 8.5 h 
Fall of Giants 18.1 h 
House of Leaves 13.5 h 
Columbella 4.7 h 
Killing Floor 9.2 h Bar height shows length. Estimated at 250 words a minute.