S4·E4 Episode 4

CHURCHILL AND ROOSEVELT exchanged 2,000 letters during the Second World War. Collected for the first time, they reveal the tensions behind the friendship and Britain's collapse as a great superpower.

A BLACK AND TERRIBLE TROOP was the name given to a gang of burglars and forgers who terrorised Westmorland 300 years ago. Timewatch traces their rise and fall through the private papers of the Justice who ran them to earth.

RING A RING O' ROSES is the nursery rhyme everyone knows has its roots in the Great Plague. But does it? Iona Opie investigates its origins.