When it 's dark , Kalle sneaks around among the houses .
When it 's dark , Kalle hears Blom saying that the floatplane 'll come tomorrow morning 7 o'clock and understands that they have a radio .
When it 's dark , Kalle sneaks around among the houses and hears Blom saying that the floatplane 'll come tomorrow morning 7 o'clock and understands that they have a radio .