SUNDAY, AUGUST 2 - 9pm
In the aftermath of the siege, Geordie fights for his life; Alphy tracks a fugitive through the countryside; the Grantchester family must face final questions of love, redemption and forgiveness.

SATURDAY, AUGUST 1 - 7pm
Search for hidden treasure in the forest, finds fractal ferns and enjoys the golden fruit of thousands of tiny insect laborers.

SUNDAY, AUGUST 2 - 8pm
Patience and Frankie are held hostage by an armed escaped prisoner claiming she is innocent; personal secrets start to emerge.

SUNDAY, AUGUST 2 - 10pm
Cora's mother sweeps into Downton for Matthew and Mary's wedding, but with the couple's relationship under strain they might not make it to the altar.

TUESDAY, AUGUST 4 - 9pm
Relationships aboard the ISS are tested when war breaks out on Earth.

WEDNESDAY, AUGUST 5 - 10pm
The crucial ecological roles that beetles play in nearly every environment, and why they are often regarded "the most important species on the planet."

FRIDAY, AUGUST 7 - 9pm
The years 1969-1970 take Americans to the moon and back; what happens to scientific and engineering programs after national goals are achieved.