Original and exciting . . . one of his best

Orphan X is his best yet - a real celebration of all the strengths Gregg Hurwitz brings to a thriller

Orphan X is the most gripping, high-octane thriller I've read in a long, long time!

Orphan X is most exciting new series character since Jack Reacher. A page-turning masterpiece of suspense

Mind blowing! A perfect mix of Jason Bourne and Jack Reacher

Orphan X is the most exciting thriller I've read since The Bourne Identity ... A new thriller superstar is born!

Orphan X is not good. Orphan X is great. Whatever you like best in a thriller - action, plot, character, suspense - Orphan X has it

A new series character to rival Reacher . . . anyone reading Orphan X won't be surprised that a cadre of peers, from Tess Gerritsen to Lee Child, have lined up to praise it

Bestseller Hurwitz melds non-stop action and high-tech gadgetry with an acute character study in this excellent series opener . . . Evan Smoak is an electrifying character

In terms of plot, characters, suspense and innovation, Orphan X is outstanding . . . I've always thought that one reason for Tom Clancy's success was the endless detail he provided about military hardware, and that the James Bond novels benefited from the loving attention Ian Fleming devoted to the martinis, expensive cars and gorgeous women he so admired. Hurwitz outdoes both writers . . . Orphan X is a smart, stylish, state-of-the-art thriller. It's also the start of a series, one that might give Lee Child's Jack Reacher books a run for their money

A masterpiece of suspense and thrills . . . Turn off the real world and dive into this amazing start to a new series

There is a pristine classicism to Gregg Hurwitz's Orphan X, which borrows from Robert Ludlum and superhero lore to bring us Evan Smoak, adopted as a child by a shadowy figure called Jack and trained to be an assassin as part of a secret US government scheme. When the Orphan programme (as it is known) is disbanded, Evan moves to California and devotes himself to good works - taking out a slum-landlord paedophile cop, for example, after his victim calls Evan's special number. However, his meticulously compartmentalised life makes him vulnerable . . . Orphan X is tight and tense in all the right places. But it wouldn't work half as well if we didn't feel Evan's pain and share his panic as the worst-case scenario unfolds: another former Orphan, with a less noble agenda, seems to be hunting him. Orphan X is weapons-grade thriller-writing from a modern master

A masterpiece of suspense and thrills . . . Turn off the real world and dive into this amazing start to a new series

Bond, Frodo, Paddington Bear - some of literature's greatest heroes have been orphans. Add Orphan X's Evan Smoak to the list

The page turner of the season

A cracking psychological thriller that drips with menace...tightly plotted and completely engrossing.

Joanne Harris is best-known for the France-set novel Chocolat,.But she does a nice line in witty psychological thrillers...Excellent.

The characterisation is always totally convincing....The denouement is exciting and totally surprising to the reader...a thrilling and unexpected ending.