Who can you trust if you can’t trust yourself?

Early one morning, blogger Alex Kubelick walks up to a total stranger and slaps him across the face. Hard.

He smiles.

They've both just earned Emoticoin, in a new, all-consuming game that trades real-life emotions for digital currency. Emoticoin is changing the face of the economy - but someone or something is controlling it for their own, dangerous ends.

As Alex picks apart the tangled threads that hold the virtual game together she finds herself on the run from very real enemies. It seems only one person has the answers she seeks. Someone who hides behind the name 'Lucky Ghost.'

But Lucky Ghost will only talk to a young hacker called Thimblerig - the online troll who's been harassing Alex for months.

Will Lucky Ghost lead Alex and Thimblerig to the answers they seek - or to their deaths?

Lucky Ghost is book two in The Martingale cycle. It's out from Hodder & Stoughton on 27 July 2017.