BBC Four Saturday

The story of a giant otter cub rescued and raised by Brazilian naturalist Carolina Vargas. The creature has to be bottle fed and taught how to survive in the wild

David Attenborough looks at the wide diversity of marine life, including fish that can fly, create electricity, and survive in soda lakes and under polar ice caps

Paul Rose investigates Norwegian explorer Fridtjof Nansen's expedition to reach the North Pole in 1893, which resulted in the development of new exploration techniques

Gabriel's wife Irène decides to conduct her own investigation into her husband's alleged death, while German spy Gruber is interrogated regarding the rival programme

The general staff orders the elimination of the Germans' superhuman and the Sentinels head off on his trail, unaware they are about to face a foe with powers beyond all measure

The strikingly coloured male hair found in the Schora case leads the investigators to a suspect, who is implicated in the unsolved murder of a French student in Austria

Progress is slow as the investigation reaches the 100-day mark, but the team finally manage to glean evidence from the murder weapon in Steinach

DeVere decides to shoot a commercial for his supermarket empire at Grantleigh

Tom tries to market his garden produce, but finds it more difficult than he imagined - especially with the added pressure of paying the household rates.

David Attenborough looks at the wide diversity of marine life, including fish that can fly, create electricity, and survive in soda lakes and under polar ice caps

Paul Rose investigates Norwegian explorer Fridtjof Nansen's expedition to reach the North Pole in 1893, which resulted in the development of new exploration techniques