We get a sneak preview of tonight's documentary that focuses on how thousands of criminals go on the run every year.
On The Run sees criminologist and former detective Mark Williams Thomas investigate how thousands of criminals go on the run every year after jumping bail or breaking their license conditions.
The programme follows Mark and his team of undercover investigators as they track down wanted criminals and help put them behind bars.
On The Run - Tuesday, 11 December. 10:00 pm