Nicholas Mason

Played by Keith Allen

First Seen: Series 1 Episode 1
Last Seen: Series 1 Episode 1
Position: Criminal

Nicholas Mason is the first criminal who Jack and the gang are after to get the bad guys off the streets. He is acquitted of robbery and the murder of an innocent man, due to lack of evidence.


When an innocent family is terrorised and their father murdered in cold blood, everyone knows that ruthless criminal Nick Mason is behind it. But when Mason, the 'Teflon Man', walks free from his trial - the third time in five years he has evaded justice - Helen calls on Jack Quinn and his team for help. Convinced Mason has at least one corrupt police officer on his payroll, Helen wants Jack to take Mason down and get him off the streets.

Although Mason never gets his hands dirty, Helen knows that he is behind the crime – and countless others. Jack is determined to bring the elusive criminal to justice with the help of his team, sassy Jessica Jones and tech genius Thomas Tomkins.

However, their job is made even more difficult when it’s revealed that a police officer appears to be feeding Mason information. Will the team be able to find Mason’s weakness and catch him red-handed?