River Monsters Jeremy goes behind the scenes and we see what went into the making of a season at sea. 2026-04-03 Jeremy Wade travels to the Parana River in Argentina. 2026-04-03 Fishing detective, Jeremy Wade, takes on the biggest investigation of his career. 2026-04-03 It was supposed to be the safest boat in the Amazon, but when Sobral Santos II sank by the remote town of Obidos on the night of September 21st 1981 more than 300 people died. What had laid into the passengers? 2026-04-04 Jeremy Wade looks at dark and deadly creatures - parasites. 2026-04-04 Jeremy Wade takes a look back some of the killer fish he has encountered in the series. 2026-04-04