A woman from London has been chosen to take on one of the roles of a killer in the all-new season of The Traitors on BBC.

The first episode of The Traitors series two launched with a surprise twist – the killers were given the opportunity to enlist an additional member to their group.

The show returned to BBC One on Wednesday evening and saw host Claudia Winkleman greet 22 strangers at a castle in the Scottish Highlands, where they will play games in a bid to win up to £120,000.

During the first episode, the contestants sat around the table and Winkleman touched the shoulders of those who would become “traitors” – contestants who meet after dark and plot to kill.

Afterwards she revealed that the traitors would need to enlist another member to their clan during their first meeting.

After the castle clock chimed, the contestants left to go to their individual lodgings before the traitors returned in the dark, travelling to the traitor turret to start what Winkleman described as their “brutal work”.

The traitors recruited by Winkleman were 45-year-old events co-ordinator Ash from Walthamstow in London, 36-year-old business manager Paul, 22-year-old British Army engineer Harry from Slough.

Ash said she applied for the show after admitting she was "looking for an adventure".

She said: "I'm happy where I am, I'm happy with the way my life is but I do need a little bit of an adventure."

Later in the first episode, the rest of the players became “the faithful” and were kept in the dark about the identity of their enemies.

The three traitors met and deliberated on whether to choose contestants Miles, Sonja, Diane, or Andrew as the fourth traitor.

The additional member was revealed in episode two, which has been released onto BBC iPlayer, along with episode three.

Speaking about whether she wants to be a traitor, Ash said that she would "be quite happy" adding that she already has her game plan prepared: "It's a game, and if I need to wipe the floor with you to win, then that's exactly what I'll do.

That sounds so horrible! I don’t mean to be horrible, but you know, it's a game and I'm playing to win."

Ash added that if she were to win the prize money, she would get on the property ladder:

"This would literally be my only chance to get on to that property ladder. I don't have what a lot of people have, I don't have a family to fall back on, I don't have anybody to give me anything.

"I don't have anything to inherit. I don't want to be renting when I'm 60 years old, renting with housemates... although that would still be kind of fun."