Books like Secrets in the Attic
V. C. Andrews
Secrets in the Attic is 384 pages, about 7 hours 2 minutes at 250 words a minute.
12 books to read next
How long each takes
The Girl from the Sea 4.7 h 
Bonjour Tristesse 2.8 h 
The Lovely Bones 6.4 h 
True Grit 4.0 h 
Evernight 6.2 h 
The Hummingbird's Daughter 9.2 h 
Foxfire 5.9 h 
My Heart Is a Chainsaw 7.6 h 
Unspeakable 5.4 h 
Trace 7.9 h 
The End of Everything 4.7 h 
The Fever 5.6 h Bar height shows length. Estimated at 250 words a minute.