BBC Three HD Monday

A round-up of the day's news

Emperor Nero sings the history of the Olympics, and there is a look at the first-ever marathon, run in ancient times by Greek hero Pheidippides

The Saxon gods form an unlikely team of superheroes, while astronaut Neil Armstrong reveals his new weight-loss programme

Jeremy Clarkson, Richard Hammond and James May build a car that can turn into a hovercraft, and two variants of the Mercedes-Benz SLS AMG are tested. With guest Hugh Jackman

Stacey follows several rehab clients as they navigate treatment for ketamine addiction, experiencing a side of recovery rarely seen on screen

Part one of two. The discovery of a mutilated child's body in a river forces Leo to face a ghost from his past, while Nikki investigates the apparently suspicious death of a priest

Part two of two. The investigation into the deaths of two African boys sparks disagreements between Simon and Leo, while Nikki continues to hunt for the priest's killer

The reporter investigates the controversial religion, re-enacting personal experiences of former members, but finding himself under surveillance by the church

Jeremy Clarkson, Richard Hammond and James May build a car that can turn into a hovercraft, and two variants of the Mercedes-Benz SLS AMG are tested. With guest Hugh Jackman

Lindsey Santoro hosts the first heat of the nationwide hunt to find the best new stand-ups, with five up-and-coming comics trying to impress the judges

Stacey gets to grips with the apparent shoplifting epidemic and sees what life is like for the frontline staff trying to prevent thefts