Rian Johnson is the director of new film Knives Out - a murder comedy with an all-star cast. His previous work includes Star Wars: The Last Jedi and sci-fi film Looper. He tells us how he copes with a Gothic whodunnit set in the real world in the present day?

Is art theft on the rise? There seem to have been a spate of high profile thefts from art galleries recently - Dresden, Dulwich, Tretyakov, even the solid gold toilet at Blenheim Palace. How can institutions make their collections accessible to the public whilst also keeping the priceless works of art secure? We ask art security expert Charley Hill

Presenter: Kirsty Lang. Producer: Oliver Jones