Jenny and Annie look at the natural lifecycle of the salmon. This episode delves into ancient legends of the salmon of wisdom as well as the romantic Scottish mythology about the Day of Bride, the Celtic festival of spring and how this relates to salmon and serpents. Jenny and Annie get curious about isotopic archaeology that questions how much fish Picts ate. We also uncover a Cromwellian book that teaches us that we need to restrict the amount of salmon we eat, with some intriguing seventeenth-century logic.