The war is all but lost when Rachel's latest plan forces Sarah to concede. Sarah uncovers a terrifying dimension to the clone conspiracy.
Sarah repels a potentially lethal Topside menace as she fights to locate a disappeared Helena, and the threat of Castor looms anew.
All sides are in hot pursuit of original clone DNA until a shocking revelation about the nature of the Castor-Leda connection stops everyone dead in their tracks.
Sarah is forced to make the sacrifice of a lifetime when Castor viciously pursues her for ‘original tissues samples’.
The Clone Club heads to London to track down the Castor Original, but their enemies are not far behind.
