Despair's Last Journey by David Christie Murray

For any and every episode of his life save this, Paul, when he chose to think about it, could make a fairly expressive picture in his mind, and could bring back something of the emotion of the time. Here he could remember only that Laurent clutched him by the arm, and that he turned on Laurent with something of the vague appeal for aid which might be imagined in the mind of a frightened child. He saw that a thousand signs which he should have recognised had escaped him, and in the flush of real apprehension which followed this thought he seemed to himself to have been almost wilfully blind to the truth. There were so many things which might have guided him, and he had taken warning by none of them.

'I beg your pardon, old chap,' he said to Laurent, speaking unconsciously in English, 'but I'm a little bit upset. You would not mind lending me your arm inside?'