The two begin an affair on their return to Cairo, while the group arranges for more detailed archaeological surveys of the cave and the surrounding area. Almásy buys a silver thimble in the market as a gift to Katharine. Some months later, Katharine abruptly ends their affair from fear her husband Geoffrey will discover it. Shortly afterwards the archaeological projects are halted due to the onset of the war. Madox leaves his Tiger Moth aeroplane at Kufra Oasis before his intended return to Britain.