David Tennant looks unrecognisable in the first trailer for his latest TV role.
The Scottish actor, 51, will appear in ITVX drama Litvinenko next month, in which the former Doctor Who star takes on the title role of British-naturalised Russian defector Alexander Litvinenko.
Litvinenko, set to premiere on December 15, will centre around the story of the former Russian Federal Security Services and KGB officer whose death, from Polonium-210 poisoning in November 2006, triggered one of the most complex and dangerous investigations in the history of the Metropolitan Police.