"Chalk Valley presents a balance of action, police technique, and character development that is incredibly rare to find period, and damn near unheard of in a debut."
- Book Reviews by Elizabeth A. White
"Chalk Valley is probably one of the best crime novels I have read in a very long time."
- My Little Book Space
"Johnstone impresses with his tantalising and absorbing debut - a great thriller."
- Verdict Book Reviews
"Mr. Johnstone is devilishly creative and has done extensive research to create the terrifyingly macabre and realistic story. Definitely keep the lights on when reading 'Chalk Valley'!!"
- Bibiliophilic Book Blog
"The writer was amazing with the character development and suspense building...a truly intense read."
- Bookluvrs Haven
"I particularly liked the characterisation, the occasional touches of irony, and real human interest."
-Mysteries in Paradise
"A lot of action and tension which would make thriller-oriented readers happy."
- Crime Segments
"A captivating read that had me hooked almost immediately."
- Going Out on a Limb
"A chilling read!"
- Book Reviews by Dee