Books like Mystery Ranch
Gertrude Chandler Warner
Mystery Ranch is 127 pages, about 2 hours 20 minutes at 250 words a minute.
12 books to read next
How long each takes
Into the Gauntlet 5.7 h 
Pollyanna 3.6 h 
Tales of a Fourth Grade Nothing 2.2 h 
Emily Climbs 5.3 h 
Dark Places 6.8 h 
The Maze of Bones 4.1 h 
The Viper's Nest 3.2 h 
My Brother's Ghost 1.5 h 
Murder Most Unladylike 6.4 h 
Eight Cousins 4.7 h 
Away Goes Sally 2.2 h 
The Heaven Shop 3.8 h Bar height shows length. Estimated at 250 words a minute.