The Wayback Machine - https://web.archive.org/web/20090218150615/http://mattcostello.com:80/novel_reviews.htm
    “A Consummate Writer of Horror”

-Science Fiction Chronicle

 
  “Author Shane Christopher keeps the tension high from beginning to end”

- Kathy Samuels
Romance Reviews Today
   
“This is a creepy book that you will not be able to put down. “

- Curled Up With A Good Book
 
    ”In Dreams is one of the best suspense and horror reads of the year. It is guaranteed to send shivers down your spine and leave you with nightmares. Not many horror novels can jolt you the way this one does. A definite must-read.”

- Joyce Wheeler
Kwips and Kritiques
 
     
  “Matthew Costello is a master at generating suspense. Missing Monday is incredibly engaging and eerie, and will have you turning the pages faster and faster…”
- Fangoria on Missing Monday
    “The latest thriller from veteran author Matthew Costello finds him in top form. Costello hooks the reader with sly hints at its complexities without revealing the extent or purpose behind it until the end. This approach yields tremendous, page-turning suspense….a bullet-train of a read.”
-Cemetery Dance on Missing Monday
 
    “One of the Ten Best Horror Novels of 2004.”
-The Chronicle on Missing Monday
 
  “Matthew Costello is rapidly gaining the acclaim reserved for superstars such as F. Paul Wilson and Stephen King. Unidentified is the best kind of horror novel, a slow revelation of the problem, a short time to fix it, and a climactic ending with all the pieces falling into place.”
- Midwest Book Review on Unidentified
     
    “Readers who enjoy a creative and entertaining horror story populated with an ensemble who appear real will relish this novel.”
- BookBrowser on Maelstrom
 
  “Echoes the psychological suspense of Hitchcock’s Spellbound. If this isn’t movie-bound, Hollywood needs a brain transplant.”
- Kirkus Reviews on Mirage
 
    “Thrilling, suspenseful, and a whole lot of nail biting fun.“
- Mystery Scene on See How She Runs.