Marina Litvinenko, co-producer Richard Kerbaj and director Jim Field Smith discuss the making of ITVX's Livinenko, finding the right cast and the responsibility of making a series based on real people and events. Marina also gives her first hand experience of the events surrounding her husband's death.

Livinenko starts on Thursday 15th December on ITVX, starring David Tennant, Margarita Levieva, Mark Bonnar and Neil Maskell.