Flash of light

There! It happened again! Did you see it? It was two quick flashes and a little gap and another flash... What do you think it was? It could be a lighthouse, I suppose, but it's far more likely to be smugglers signalling to each other, don't you think? How are the batteries in your torch? Do you think that we should signal back to them? I do. I think that we should signal back to them. This is SO exciting!