The invasion was stopped at Jodrell Bank. But the nightmare is far from over.
Thousands of people across Britain may be carrying alien technology inside their bodies. They look ordinary. They live ordinary lives. And none of them knows what might happen when the signal returns.
As MI18 struggles to contain the aftermath, a powerful rival organisation takes control of its headquarters and its most valuable prisoner. With their resources stripped away and their loyalties under scrutiny, Carrie Travers and her colleagues must continue their investigation from the shadows.
Meanwhile, Dean Sharman lies unconscious in a secret research facility. His body is changing, his mind remains connected to something no one understands, and the world he experiences may not be what it seems.
Somewhere beneath the ground, something ancient is listening.
And the Harmony is not finished with humanity.
The Sleeper Protocol is the third book in The Faceless Invasion, a science-fiction thriller of hidden identities, government conspiracies and a threat that could be waiting inside anyone.