Devil You Know

Cathy MacPhail


Quick Look

  • A stand-out thriller from best selling teen author Cathy MacPhail
  • Fast-paced and gripping with the author's unique brand of real-life drama and shocking twists!
  • The action-packed story of a group of boys dealing with friendship, trust and revenge on a Glasgow estate

Recently arrived on a Glasgow council estate, Logan is grateful to have made any friends at all. But will his best friend Baz be there when he really needs him? A stand-out teen thriller with a sensational twist.

Floris Books
Age Range:
From 12 to 15 years
280 pages
Publication date:
19 Mar 2015


"Baz was the kind of friend I wanted. Everyone seemed a bit afraid of him."

Forced to move away from his dad in Aberdeen to a run-down Glasgow council estate, Logan thinks he's pretty lucky to have made any friends -- let alone Baz and the boys. Baz might have a bit of reputation, be a bit mouthy, but he's the kind of friend who'll stick up for you; who'll make life interesting -- or should that be dangerous?

When Logan, Baz and the boys get caught up a local turf war Baz is the first to fight back. But the aftermath leads Logan and his friends deeper into a world of real-life gangs, threats and lethal revenge.

How far will Baz go, and will Logan follow him?

Award-winning author Cathy MacPhail once again delivers a stand-out, action-packed teen thriller with a sensational twist.


'Phew! What a story... This book is exactly what should get young teenagers reading.'
-- Ann Giles,

'I think teenage boys will love this book. The plot is very clever and well thought out. Towards the end of the story you will be faced with a killer twist...This story is fast paced and well plotted; full of action and equal amounts of tension that will have you gripped throughout.'
-- Mr Ripley's Enchanted Books

'Taut and gritty, this one is a real page turner.'

'The book was excellent -- a real page turner which gripped me right from the start.'
-- Emma, Craigmount High, Teen Titles

'A great gripping read.'
--Northfield Academy Library

'A great gripping read. Will really appeal to teens.'
-- Netgalley


Cathy MacPhail (1946-2021) was the award-winning author of over thirty children's books including Run Zan Run, Roxy's Baby, Out of the Depths and Grass. Her novel Mosi's War won the Scottish Children's Book Award, an award she'd won twice before, and a film adaptation of her novel Another Me was released in 2014. Cathy wrote spooky thrillers for younger readers and challenging teen novels and was acclaimed for her unique ability to get to the heart of serious, topical issues through the stories of her feisty characters. She was born and brought up in Greenock, Scotland.

You can also visit the author's own website at

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