The use of the pursuit car's siren and lamp had changed that.

It had been a brutal day's work since the teletype message bearing the instructions from Paris had forewarned him of the need to set a major operation in readiness. By late afternoon, at a time when he would normally have been thinking of home and his supper, the fleet of black Citroens had started to arrive in the discreet yard at the back of his headquarters. He had shaken several hands. Men from the Ministry, from the security services. There had been one who wore no tie, was dressed in creased jacket and slacks, and to whom everything was relayed. That one spoke his French adequately, but was not fluent, had a Central European accent and dangled a silver, six-pointed Star of David round his neck. He was treated with something close to deference.

The local man had been told little, informed of only a part of the background to the event, but had established, and forcibly, that if a car was negotiating his personal territory then it was preferable to have his own men on its tail.

'These lanes will swallow you up,' he'd said with the certainty of intimate knowledge. 'If you have no local experience, you will lose them, easy as a flea in a rug.'

The point had been accepted. One of the canniest of his drivers had taken over from the security services' surveillance that had shadowed the car across two-thirds of French territory. It had been going well, earning congratulations from the big men of the Paris counter-espionage division, until the angry and staccato bursts over the radio had warned of the intervention of the cows. But little, he had reflected, was lost. The men he hunted were still being shepherded into the fine mesh net that he had laid for them.

'When will they reach the blocking point, on their present route?' He spoke to his aide.

'Four to five minutes, sir. Not longer. Just the far side of Fauquembergues, at the cross-roads. Where the petrol station and the cafe are.'