Andrew Scott is the latest in a long line of actors to play Thomas Ripley - the seductive, sociopathic conman created by American crime writer Patricia Highsmith, and immortalised in films from Plein Soleil to The Talented Mr Ripley.

Ellen E Jones and Mark Kermode look at Ripley and other social strivers on screen, asking how these interlopers have insinuated themselves into our hearts and minds.

Ellen explores what makes Patricia Highsmith’s work so cinematic, with a lifelong Highsmith fan – critic and novelist Kim Newman. And she speaks to Swiss documentary filmmaker Eva Vitija about her 2022 film Loving Highsmith – a fascinating look at the author’s life and artistry, told through her unpublished diaries, and interviews with her friends and former lovers.

Mark Kermode looks beyond Highsmith’s work, to explore how the 'Ripleyesque' figure has endured. He discusses cinema’s most notorious interlopers, from The Great Gatsby to Saltburn, with Manuela Lazic, a French critic, writer and filmmaker.

Mark also talks to two of his favourite filmmakers, Christine Molloy and Joe Lawlor. Christine and Joe’s newest film Baltimore – about the debutante turned IRA member Rose Dugdale – is just one of many stories about interloping and identity that they’ve brought to the screen over the years. They tell Mark why the theme fascinates them.

Producer: Jane LongA Prospect Street production for BBC Radio 4