Books like Two Little Girls in Blue
Mary Higgins Clark
Two Little Girls in Blue is 359 pages, about 6 hours 35 minutes at 250 words a minute.
12 books to read next
How long each takes
The Institute 11.4 h 
Dark Matter 6.7 h 
The Butterfly Garden 5.6 h 
Gone Girl 8.7 h 
A Wrongful Death 3.7 h 
Think of a Number 9.2 h 
The Last Child 7.9 h 
The Switch 10.2 h 
The Sittaford Mystery 4.1 h 
Home 7.7 h 
Therapy 5.6 h 
The Abduction 9.4 h Bar height shows length. Estimated at 250 words a minute.