Books like The Dean Koontz Companion
Martin H. Greenberg, Ed Gorman, Bill Munster
The Dean Koontz Companion is 320 pages, about 5 hours 52 minutes at 250 words a minute.
12 books to read next
How long each takes
John Grisham 2.6 h 
Stephen King 3.4 h 
H.P. Lovecraft-Contre le Monde, Contre la Vie 2.7 h 
The Stephen King Companion 9.1 h 
Decolonising the Mind 2.4 h 
Hamlet 3.5 h 
Gore Vidal 5.1 h 
Dean Koontz 9.5 h 
Paperbacks from Hell 4.7 h 
The Captive Mind 4.6 h 
Please Kill Me 8.3 h 
Thrillers 6.9 h Bar height shows length. Estimated at 250 words a minute.