With Mark Lawson. Mark talks to Michael Ball and Imelda Staunton, who star as the demon barber of Fleet Street and his partner in crime Mrs Lovett in Stephen Sondheim's musical Sweeney Todd. Having created the hugely successful Downton Abbey, Julian Fellowes has turned to the Titanic story for his new ITV mini-series. Writer and critic Kate Saunders gives her verdict. Novelist Russell Banks discusses the issues surrounding his latest work The Lost Memory Of Skin, which follows a convicted sex offender on probation. Producer Ellie Bury.