Sky History 2 HD Monday

The team uses high-tech sidescan sonar and deep sea magnetometers to search for evidence after learning of an encounter with an underwater phenomenon

The team finds evidence from one of Scotland's bloodiest eras as they wade through the waters of the River Garry in the stunning Scottish Highlands

Alice Roberts visits Norfolk to explore an Iron Age hillfort, discovering that 4th-century Romans used it the most, before travelling to a community dig in Lincolnshire

A grim discovery in a Swedish lake reveals shocking ancient practices and the fossil of a previously unknown mammal is found in the Canadian Arctic

On the hunt for classic old Canadian canoes, Scott and Sheldon find themselves up the creek without a paddle. Later, they're forced to haggle with a smart teen

Extended episode exploring suggestions of extraterrestrial influence on Earth. Subjects include actions initiated by the US Department of Defence to study UFO sightings