Books like Clockwork Princess
Cassandra Clare
Clockwork Princess is 656 pages, about 12 hours 2 minutes at 250 words a minute.
12 books to read next
How long each takes
The Rook 20 min 
黒執事 IV 3.3 h 
Succubus Heat 6.3 h 
The Good, the Bad, and the Undead 8.3 h 
Pleasure of a Dark Prince 8.1 h 
Such Sharp Teeth 6.2 h 
Highland Hunger 5.6 h 
Demon Angel 7.9 h 
Works 18.2 h 
The Young Elites 7.2 h 
Moon Called 5.6 h 
Duma Key 12.6 h Bar height shows length. Estimated at 250 words a minute.