Secret Knowledge

Lucy Worsley tells the story of Bolsover Castle in Derbyshire. Built in the early 17th century, it became the pleasure palace of playboy Cavalier William Cavendish.

Stuart Kelly gets behind-the-scenes access as over 13,000 treasures are moved back into Sir Walter Scott's Abbotsford House.

Clemency Burton-Hill indulges in her lifelong passion for the violin as she explores the mysterious life and lasting influence of legendary violin maker Antonio Stradivari.

Artist Lachlan Goudie presents a personal documentary, inspired by his father, in which he investigates why witches have cast such a powerful spell over generations of artists.

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.

Tracey Emin offers an insight into the life and work of the French-American artist Louise Bourgeois, famed for her sculptures and installations embodying her personal emotions.

Helen Rosslyn makes the case for troubled, turbulent 17th century printmaker and draftsman Giovanni Benedetto Castiglione to be seen as one of the great artists of the Baroque.