The Traitors: Could Harry have finally met his match with Ross? As the last recruit says, he will avenge his mother Diane – a look at his family life

Traitors viewers were left shocked this week. Harry threw fellow traitor Paul under the bus during an explosive roundtable.

And Ross has become the latest Faithful to take over the dark side after being recruited in Friday's episode.

The video director, 28, joined The Traitors after receiving an invite from fellow contestants Harry and Andrew.

While Harry secretly tries to feed him to the lions, Ross later revealed a plan of his own: revenge, as he wants to avenge his mother, Diane.

Ross was left devastated Diane was 'murdered' after drinking from a poisoned chalice, after revealing to viewers that they are mother and son, but keeping this a secret from their fellow contestants.

With Ross seemingly an expert in the art of deception, could Ross have finally met his match? Here, MailOnline takes a look at his family life.

What happened to his mother Diane?

Ross turned to the dark side in Friday's episode and vowed to avenge his mother.

And even after her “murder,” Ross vowed not to tell his co-religionists the truth about their relationship, and in a shocking twist, he became a new traitor.

The decision to join the traitors was not an easy one for the player, as he debated whether to refuse their offer.

After receiving the letter, Ross said, “I don't want this, I don't want any of this. I just want a fun, happy game, be faithful to the end, win the money.

“Maybe I should just say no because of something as small as my mother's murder.”

“But I think mom is looking down on me now, as awful as that sounds, and I think she would say 'go for it,'” he added.

'I don't want to be killed. Go ahead and I'll join them, why not.'

After realizing his fate, Ross looked at it positively and said he is intrigued to know who killed his mother, adding, “If he can't beat them, join them.”

'My mother was murdered. So I will get revenge. If I get the chance, they will too,” he said with a grin.

Retired teacher Diane, 63, insisted they had promised to keep their family connection a secret no matter what, and said Zack, who suspected Paul as her son, was their perfect cover story.

She said: 'I didn't feel like this would be a secret that would hurt anyone in any way shape or form. It even caused me a lot of stress because we got our first story wrong within two seconds on the train.

'I ran around making sure the same stories were heard and then worried about him when he didn't come to breakfast.

'At first we stayed a bit apart because I was so worried.

“As soon as Zack brought up the wonderful fact that Paul was my son, I relaxed. We certainly never revealed it all.”

She also addressed her own death scene after being forced to lie in a coffin following a dramatic funeral procession during Wednesday's mission.

Diane said, “We do have actors in the family, so we've seen my eldest son blown up on a ship, my daughter lying in a coffin on stage, my son-in-law mowed down by a van, have you? do you know what I mean?

'I would hate for people to think, 'Oh God, that son had to watch his mother'… because there would be. If you start doing it with every mother and son, it's one of the best combinations.'

Who is Ross' brother?

Diane revealed her eldest son was an actor who was 'blown up on a ship' after her shock funeral.

Kerr Logan, 35, is best known for his role as Matthos Seaworth, son of Ser Davos in the hugely popular series Game of Thrones.

Born in Bangor, Ireland, he moved to England with his family when he was 12 years old.

Ahead of the debut episode, the actor excitedly revealed on social media that his mother is none other than retired teacher Diane.

He shared an official photo of her from the show and wrote, “My mom is on the snitches. My mother is on the traitors. My mother is on the traitors. She is crazy. I'm afraid.'

Kerr claimed he only found out his mother would be on the show when the cast was officially revealed, just days before the series kicked off.

Posting the official group photo, he wrote: 'How are you supposed to react when your immediate family is in this photo and you've just discovered it like the rest of Britain?'

To which Diane cheekily said, “I'd say, Wow, that's absolutely amazing!!!”

In addition to Game Of Thrones, Kerr has also appeared in London Irish, Good Vibrations and Dead Still.

He is married to theater actress Sara Vickers, 39, who is best known for her role as Joan Thursday in the detective drama series Endeavour.

Does Diane have any other actors in her family?

Diane's daughter Lisa Swainsbury is a theater actress, producer and writer.

Most recently she wrote the show Cocktails In The Departure Lounge.

Lisa is married to Sam Swainsbury, 33, who is best known for his role as Jason in sitcom Mum and a role in Thor: The Dark World.

Other credits include Hullraisers, Fearless and Call The Midwife.