Books like The Key to Rebecca
Ken Follett
The Key to Rebecca is 355 pages, about 6 hours 31 minutes at 250 words a minute.
12 books to read next
How long each takes
Double Cross 8.4 h 
Enigma 7.5 h 
The Hut Six Story 6.0 h 
Agent Zigzag 6.8 h 
The Eagle Has Flown 6.2 h 
The Eagle Has Landed 7.0 h 
Bodyguard of Lies 17.4 h 
The Soldier Spies 7.0 h 
The Spy Wore Red 8.0 h 
Doctor No 4.4 h 
Red Sparrow 8.0 h 
For Your Eyes Only 4.4 h Bar height shows length. Estimated at 250 words a minute.