It was a typical peasant Flemish family-father, mother and eight children, all sleeping in one big room on the second floor of the house. He had to be disposed of before the children were up, and so, after he had met the mother, who characteristically did most of the farm chores, he was hidden in a great hay-loft on top of the goat pen, where he stayed for three and a half months... Three times the house and the loft were searched by the Germans, but each time he managed to escape detection, putting the hay carefully back in place as he moved away from them into another corner of the loft.
Three months and a half of imprisonment amid the stench of the goats without medical attention for his damaged shoulder... For the first week Knowlton could get no sleep at all, what with the discomfort, the pain and the goats, but after that it was nothing for him to sleep twenty hours a day.
Then one day something happened. Knowlton was told by the farmer that he had received instructions from the 'Chief' and that necessary papers had been manufactured. He was provided with a forged passport and work card, on both of which he was shown as a temporary employee of the Sanitary Inspection Branch of the Ministry of the Interior and Public Health. His own R.C.A.F. identity photographs completely regularized the documents. He was provided with boots and a civilian suit, as well as a bicycle which took him to a railway station. From there he travelled by train to Louvain and to Brussels, and by tram in the latter city to his rendezvous. He was under instructions to pose as deaf and dumb, and to keep in sight but not approach the underground agent who met him for a moment at the Louvain station. On the train he took good care not attract any attention, but he still recollects with ironic pleasure helping on board a German soldier with a very heavy pack, and sitting in a Brussels tram cheek by jowl with a higher officer of the Luftwaffe.
His conductor descended at dusk near a park in Brussels and a moment later he was met by a woman who took him to her apartment in the city. Like her associates in the underground, she was anonymous, but he learned that she had heard of his presence on the farm from the farmer's 'Chief' and that it was by her instructions that he had received his papers and been sent to Brussels.
The first concern of his benefactress was to secure for him proper medical attention. He was taken to a hospital, where three doctors were awaiting him... Only the operating surgeon and the attendant nurse knew that he was a Canadian airman...
After a week in the hospital he was brought back to the apartment, where he was strictly confined during the few weeks that remained before the liberation of the city. It was close to some sort of Maquisard headquarters, he met there as many as fifty or sixty agents a day, whose names he was never told.
From a window looking on the street he could see the retreat of the German Army as it passed through the capital. On Sunday evening, 4th September, 1944, Brussels was liberated, and six days later he was evacuated by air to England.