Dark horizons - J. T. Colgan

"We need to reach out. We need to continue the line..."

On a windswept northern shore, the islanders believe the worst they have to fear is a
Viking attack. Then the burning comes. Water
will not stop it. It consumes everything in its path - yet the burned
still speak.

The Doctor encounters a people under attack from a power they cannot
possibly understand. They have no weapons, no strategy and no protection
against a fire sent to engulf them all. The islanders must take on a ruthless alien force in a world without
technology; but at least they have the Doctor on their side... Don't they?

A thrilling adventure starring the Doctor, as played by Matt Smith.