Paul has hooked a very big and very angry rainbow trout, which has decided to put as much distance between itself and its tormentor as possible. Nothing new there: but in this case, the fish in question has entered a log-maze of Byzantine complexity. As you can tell from the direction of Paul's puzzled gaze, it has made quite a lot of progress so far. Come back tomorrow for the next instalment in this series. It all gets a lot more exciting.