K is for Kill: The Tiger Awakes (1) (S02E08)

Title: K is for Kill: The Tiger Awakens (1) Plot: In 1965, a young Russian soldier shoots down a Salvation Army Band before mysteriously collapsing and aging rapidly. Fast forward to 1977 in France, where another young Russian soldier assaults men in uniforms. Meanwhile, a Russian unit assaults an abandoned house, and after a soldier's death, he too experiences an unnatural aging process. Steed and his team are on a quest to uncover the bizarre connection between these assaults on seemingly outdated targets and the strange phenomenon of aging among the soldiers.