I have to compliment the narration for this audiobook - the narrator, when acting as the narrator, had an average Joe sort of voice, yet he managed to impart distinction to each of the characters in turn, and not to irritate me in the process, which is something that male narrators can do at times when portraying a female voice, Percival's Planet being a good recent example of that. Odd that I was reading two books at the same time that featured a child genius as a character, but the similarities ended there! Koontz is one of my go-to authors for light entertainment in between things I have to think harder about, and I did enjoy this. There was a curious mixture of the lightheartedness of the central family and their bemused approach to their son's experimentation and the dog who kept turning up in odd places and the absolute unprovoked graphic violence that was visited upon the various victims. Cubby's back story was interesting and unanticipated. I would have to say though that actual explanation of the purpose behind the violence was weak - the weakest part of the story, but still and all, a nice diversion.

This has been the best book that I have read in a few months. Relentless was so thrilling and full of mystery until the every end. I amnglad that this was the first Dean Knootz book I read, because I love his style of writting. The begining of this novel was very funny and took a very unexpected turn which escalated very quickly. I throughly enjoyed the Mystery of Sherman Waxx and Cubby's son Milo, and of course Lassie. This book was just so cool I cannot get over it. I can see in my future more books on my shelf with the name Dean Koontz on the spine.

Good humor. Ending needed fleshing out.

Loved this novel, great premise and very unique.

I personally loved the ending, I thought it was very fitting. Only reason it’s not five stars is because I feel like I need more information about ‘The Agency’.

Pretty poor writing. mildly scary. bad ending.

Hated this book within the first few pages. The characters are shallow, checking off every asinine stereotype as the pages turn. 60 pages later I can't bring myself to read another page. Some poor tree somewhere had to die for this crap. I quit.

I love thrillers, but the "evil villian" in this one creeped me out - how is that some books you can just read without feeling bothered by them and others unsuspectingly freak you out?! Anyway, not one of Koontz's best. The humor seemed forced, the life a little too perfect, the way things came together a little too neat.

This book is off the charts! Great suspense, great humor! You will absolutely love Milo and Lassie! Great read!

I loved this book...until the end. Suspenseful and gripping along the way, but the ending felt rushed.