Books like The Treasure in the Royal Tower
Carolyn Keene
The Treasure in the Royal Tower is 160 pages, about 2 hours 56 minutes at 250 words a minute.
12 books to read next
How long each takes
Rise of the Isle of the Lost 5.3 h 
Where the Red Fern Grows 4.6 h 
Found 6.2 h 
The Darkest Minds 9.8 h 
The Kill Order 7.0 h 
Gone 10.4 h 
The Invaders 8.2 h 
A New Beginning 8.6 h 
The Last Guardian 6.2 h 
Nicholas and the Gang 2.4 h 
UnDivided 7.3 h 
My Teacher Flunked the Planet 3.0 h Bar height shows length. Estimated at 250 words a minute.