"Intricate, fast-paced, and with a protagonist I am sure we will hear more of, Roberts announces himself as a genuinely innovative crime writer with a taste for the macabre and unexpected." Daily Mail
"The Sixth Soul is a classic police procedural with a difference – the protagonist isn't a hard-drinking loner" Welovethisbook.com
"A compelling read" eurocrime.co.uk
"Roberts is a writer who definitely has talent" shotsmag.co.uk
"Fast paced and disturbing, this is certainly a compelling debut" bookshelf butterfly
"This is the first book that I've read written by Mark Roberts. He has an excellent writing style, and from the first few pages of the book, he managed to keep my interest in the story maintained."
"Fantastic read. A real page turner! The story was gripping from start to finish, the characters believable and a very satisfactory ending. Hurry up and write another please!"
" Kept me up reading in bed at night until i'd finished the book. Hope there's a second to follow on"
"This book is brilliant" Katie Dallas