''It''s clear you''re in the hands of a master storyteller'' - Alex Michaelides

Upgrade is the mind-bending thriller from Blake Crouch, author of the bestselling Dark Matter and Recursion.

‘You are the next step in human evolution . . .’

What if you were capable of more?

Your concentration was better, you could multitask quicker, read faster, memorize more, sleep deeper.

For Logan Ramsay, it’s happenin...