Friendship, propaganda and the promise of paradise - why Shamima Begum left London at 15 for the Islamic State group in war torn Syria. But how did she ignore the group’s brutal violence? And who convinced her to go?

The feature length documentary, "The Shamima Begum Story", will be on BBC2 at 9pm on February 7th.

Reporter: Josh Baker Written by: Josh Baker and Joe Kent Producers: Josh Baker, Sara Obeidat and Joe Kent Composer: Firas Abou Fakher Theme music: Sam Slater and Gunni Tynes Mix and sound design: Tom Brignell Production coordinator: Janet Staples Series Editor: Jonathan Aspinwall Head of Long Form Audio: Emma Rippon Commissioning Executive: Dylan Haskins

Guidance: This episode contains descriptions of extreme violence