Popular thriller by award-winning writer. This fast-paced story races along with speed and plenty of wit as Dr Paul Price and his partner, Llinos Burns try to escape from the secret police and battle with their conscience over the creation of new drones.

• I – Rheol Zeroth: Mae’n rhaid chwarae’r gêm
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• II – Rheol 1: Allwch chi ddim ennill y gêm
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• III – Rheol 2: Yr unig ganlyniad posib fydd colli’r gêm
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• IV – Rheol 3: Allwch chi byth ddianc rhag y gêm
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