Books like The Unfinished Clue
Georgette Heyer
The Unfinished Clue is 266 pages, about 4 hours 53 minutes at 250 words a minute.
12 books to read next
How long each takes
The Killings at Badger's Drift 4.8 h 
Death at the Bar 5.0 h 
Sacred Games 16.9 h 
Death and the Dancing Footman 5.9 h 
Murder Is Easy 4.1 h 
Invisible Prey 7.3 h 
Still Life 7.0 h 
Mystic River 9.0 h 
Opening Night 4.3 h 
The Housemaid 6.2 h 
Wolf to the Slaughter 4.0 h 
Sleepyhead 7.6 h Bar height shows length. Estimated at 250 words a minute.