Through interpretations of some of the archaeological treasures of the Swedish National Museum, now on display in Edinburgh, Dr Janina Ramirez of Oxford University explores the fascinating wealth of Viking culture and its long-lasting influence on the British Isles.

Lucy Worsley tells the story of Bolsover Castle in Derbyshire. Built in the early 17th century, it became the pleasure palace of playboy Cavalier and ambitious courtier William Cavendish. Guiding us on a tour of the castle and its remarkable collection of artworks, Lucy brings to life the spectacular masque held by Cavendish to win the favour of King Charles I. And from within the walls of this eccentric architectural gem emerges a colourful tale, capturing the tensions of early 17th-century England that would eventually lead the nation to civil war.

Jewellery designer Shaun Leane uncovers some of the secrets of the hoard of nearly 500 Elizabethan and Jacobean jewels discovered by workmen in London's Cheapside district in 1912.

Lars Tharp appeals to the nation to help him recover a rare piece of long-lost William Hogarth memorabilia - a precious terracotta sculpture of the artist's beloved pet pug.