The operation had cost Foyle Cr 200,000 bribe to the chief surgeon of the Mars Commando Brigade and had transformed him into an extraordinary fighting machine. Every nerve plexus had been rewired, microscopic transistors and transformers had been buried in muscle and bone, a minute platinum outlet showed at the base of his spine. To this Foyle affixed a power-pack the size of a pea and switched it on. His body began an internal electronic vibration that was almost mechanical.