Before Jeremy caught radioactive catfish in Chernobyl and killer stingrays in Colombia, he didn’t think Season 5 would bring any new or unusual river monsters. He couldn’t have been more wrong: “At the end of Season 4, I seriously wondered where we could possibly go from there. Surely we'd now run out of monsters. But thoughts of retirement, and warm cups of cocoa in my armchair, proved to be premature. We dug even deeper into fishing folklore and struck an unexpectedly rich seam of new stories, surprising discoveries and spectacular fish. It truly was an exceptional year of travels, surpassing all expectations, and these are the highlights...