Bolsover Castle 2

The Antiques Roadshow returns to Bolsover Castle in Derbyshire, where treasures include a rare jade pendant found in a garden, a painting by novelist DH Lawrence and a huge collection of vintage hats.

The team are transported back to childhood by a complete set of Enid Blyton's Famous Five books, while a vast collection of vintage hats draws a crowd as Fiona meets a woman whose hobby has become a full-time profession.

Books specialist Justin Croft gets a new insight into DH Lawrence, author of Lady Chatterley's Lover, when he is asked to appraise a painting by the novelist, while a broken pot depicting a slave auction turns out to be a valuable piece of abolitionist memorabilia inspired by the novel Uncle Tom's Cabin.

A beautifully crafted early 19th-century flintlock pistol catches the eye of militaria specialist Robert Tilney, and a flea-market purchase turns out to be a rare painting by Sidney Hunt, a member of the Seven and Five Society of artists that included Henry Moore and Ben Nicholson.

A jade pendant dug up in the garden of a 17th-century house stuns Ronnie Archer-Morgan, who wants to know how a Maori hei-tiki artefact that could be over 300 years old ended up in a corner of England.