David Tennant's new role is worlds away from Doctor Who as he stars in the brand new ITVX Litvinenko.Tennant will be portraying ex-KGB officer Alexander Litvinenko, who was fatally poisoned in London in 2006, in the four-part mini-series.
The show, which is available to stream on ITVX from Thursday, December 15, follows the police investigation into his murder and his widow Marina's 10-year search for justice.The trailer saw the Bathgate-born actor, 51, transform into the now-famous image of Litvinenko lying in his hospital bed following his poisoning.
Tennant's transformation to recreate the image left him wondering whether or not he was looking at himself or Litvinenko. But what is the true story behind the chilling case?
Here's everything you need to know..Litvinenko was a former officer of the Russian Federal Security Service (FSB) and the KGB.
Read more on dailyrecord.co.uk