BBC Three

Zara McDermott discovers that Gaia's alleged attacker contacted her months before she went missing. As her older sister Clara says, the texts triggered a mental health crisis. As her attempts to get a restraining order were declined, Gaia spiralled.

At 11 years old, Alex Batty vanished on what was supposed to be a short family holiday with his mother and grandfather. An international missing persons investigation was launched, but years passed without a trace. Then, six years later, a teenager appeared on the side of a road...

Richard Hammond is dropped into the remote, frozen wastes of Canada to test a watch with a built-in emergency beacon. Also in this show, Clarkson is on the track in the new 471 horsepower Lexus RC F coupe.

Returning to Gallifrey, the Doctor faces the Time Lords in a struggle that will take him to the end of time itself. Who is the Hybrid, and what is the Doctor's confession?

An unexpected social media meltdown forces Geoffrey to reassess his life and values.

This is BBC Three. Programmes start at 7.00pm.

This is BBC Three. Programmes start at 7.00pm.

A round-up of the day's news.

Steve Backshall takes to the icy waters of Vancouver in search of the biggest, baddest sea lion in the world. After an unexpected encounter with a killer whale, he heads back to the city on the trail of one smelly contender before trying his hand at becoming a raccoon. Despite...

Steve and the crew are on a mission to find the largest cat in South America - the awesome jaguar.

It's week 3 of the sewing bee, and it's time for Reduce, Reuse, Recycle, with pants, outfits with drama at the back and made-to-measure hoping to save the planet.

Jeremy Clarkson, Richard Hammond and James May take three V8-engined sports cars on a gruelling 1600-mile journey through the spectacular landscapes of Patagonia. Along the way they encounter rough roads, collapsed bridges, broken bones and a cow.

Jeremy Clarkson, Richard Hammond and James May continue their journey through Patagonia to the southernmost city in the world. Along the way they encounter stunning landscapes, mechanical meltdowns and torturously unpaved roads.