Books like The Secret Keepers
Trenton Lee Stewart
The Secret Keepers is 512 pages, about 9 hours 23 minutes at 250 words a minute.
12 books to read next
How long each takes
Magisterium 4.7 h 
Magisterium 5.0 h 
Moon Rising 7.1 h 
When the Moon Was Ours 5.3 h 
Simon Vs. the Homo Sapiens Agenda 5.9 h 
The False Prince 6.4 h 
Adventures with Waffles 4.0 h 
Mr Stink 5.0 h 
Crescendo 7.5 h 
If I Was Your Girl 5.7 h 
Whatever After 4.4 h 
Blue Bloods 5.9 h Bar height shows length. Estimated at 250 words a minute.