'O'Keeffe brings the world Skylark inhabits to vibrant life, painting the passions of her activists so vividly that the reader - and Dan himself - are drawn into their desire to change the world.' - Observer

'Alice O'Keeffe deftly renders the shocking truth of the spy cops scandal into a moving tale of love, identity and betrayal. Essential reading.' - Jake Arnott

Their ideals brought them together, but how closely should you follow your heart?

It's the mid-90s, and rebellion is in the air.

Skylark is an activist, a raver, a tree-dweller, a world-changer.

Handsome, dependable Dan appears on the scene, offering her the security she has never had. When they fall in love, she shows him a new way to live; he will never be the same.

But Dan has a secret, which Skylark must never, ever know.

A secret so powerful that its fault-lines run from their ordinary council flat right up to the highest echelons of the state.

Their story is the story of Britain's undercover police.

As Skylark comes to doubt not only Dan's commitment to their shared ideals, but his very identity, she finds herself asking: can you ever really know the person you love?