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      Jean-Marc Daumal awoke to the din of the call to prayer and to the sound of his children weeping. It was just after seven o’clock on an airless Tunisian morning. For an instant, as he adjusted his eyes to the sunlight, Daumal was oblivious to the wretchedness of his situation; then the memory of it took him like a shortness of breath. He almost cried out in despair, staring up at the cracked, whitewashed ceiling, a married man of forty-one at the mercy of a broken heart.

      Amelia Weldon had been gone for six days. Gone without warning, gone without reason, gone without leaving a note. One moment she had been caring for his children at the villa – preparing their supper, reading them a bedtime story – the next she had disappeared. At dawn on Saturday, Jean-Marc’s wife, Celine, had found the au pair’s bedroom stripped of its belongings, Amelia’s suitcases taken from the cupboard, her photographs and posters removed from the walls. The family safe in the utility room was locked, but Amelia’s passport, and a necklace that she had placed there for safekeeping, were both missing. There was no record at Port de la Goulette of a twenty-year-old British woman matching Amelia’s description boarding a ferry for Europe, nor any airline out of Tunis with a passenger listing for ‘Amelia Weldon’. No hotel or hostel in the city had a guest registered under her name and the few fresh-faced students and ex-pats with whom she had socialized in Tunis appeared to know nothing of her whereabouts. Presenting himself as a concerned employer, Jean-Marc had made enquiries at the British Embassy, telexed