As Baltimore prosecutors ask for Adnan Syed’s conviction to be vacated, Clémence Michallon remembers the podcast that transformed a genre

A new documentary re-investigates the murders of three men in Waltham, Massachusetts on 11 September 2011. Clémence Michallon speaks to journalist Susan Zalkind, who asks: “If police investigated this case thoroughly, would they have prevented the Boston marathon bombing?”