This is the kind of zany novel in which a dope-dealer’s dogs are not dobermans but miniature dachshunds, and a family of gangsters are called the Sangsters. Fans of graphic comedy — as purveyed by Chris Brookmyre and Stuart MacBride — will love it

a piece of very enjoyable fiction... this detective story is written with great verve and introduces us to an engaging hero

Relentless pace, katana-sharp humour and an endearingly irascible protagonist make Double Proof irresistibly entertaining

A rollicking thrill-ride of a novel, whip-smart and shot through with the darkest comedy. Martin Stewart is a fresh and exciting new voice in Scottish crime fiction

a real caper... seriously laugh-out-loud

a cracking good read... so witty, so caustic... the sort of book you have to read sitting bolt up

a heady mix of corrupt coppers, dodgy drug dealers and Japanese gangsters, all spiced with dark humour and hints of another kind of spirit

More than just a capable debut into the adult market, Double Proof is a solid, confidently-told tale laced with sardonic wit and driven by cat-and-mouse energy

A slick slice of Tartan Noir. With indelible characters and a satisfying plot . . .  the book is knitted together expertly with pathos and humour to offset the gritty action within the pages

There is plenty of tension, and behind the humour, a whole lot of underlying threat... The pacing of this book was spot on

Raw and amusing by turns ― occasionally even at the same time. Martin Stewart is a new and innovative voice in psychological thriller-writing to look out for

This funny, gritty novel... keeps the reader on the edge of their seat until the final page

The novel manages to bring fresh ideas and faces to the genre

One of the best crime debuts of the year... both embraces and subverts genre stereotypes and expectations to create something fresh and exciting