With Mark Lawson. A new attraction The Making of Harry Potter opens its doors this weekend. Visitors to the Leavesden film studios can look behind the scenes of the making of the most successful film series ever. Actors Rupert Grint and Warwick Davis and special effects designers take Mark on a tour which includes the Great Hall, the Knight Bus, Diagon Alley and Ron Weasley's kitchen. Award-winning American poet Adrienne Rich has died aged 82. During a career which spanned seven decades, Rich was a pioneering feminist, who tackled topics such as racism, sexuality and economic justice. Writer Jeanette Winterson pays tribute, and we hear archive of Adrienne Rich herself. Mark reports on the screenplays which were never filmed. On Saturday actor Brian Cox will perform Orson Welles' complete but unmade script for Heart of Darkness, based on the book by Joseph Conrad. His performance takes place inside a boat created by artist Fiona Banner, inspired by the vessel in Conrad's novella. Fiona Banner reveals her long interest in Welles' script, and David Hughes, author of Tales From Development Hell, considers other notable Hollywood unmade screenplays. And Mark also discusses This Is Not a Film, a new release from Iranian director Jafar Panahi, which is an account of how he's unable to make a scripted film in Iran. Producer Nicki Paxman.