While on his own with Debbie, Carl finally plucks up the courage to admit that he was driving the car when they crashed and caused Billy Mayhew’s death.

In response, Debbie confesses to Carl that she’s always known the truth, but she wants to protect him at all costs. That’s far from the most shocking confession of the day, though, as Debbie goes on to reveal the mother of all secrets…

“I don’t think she had decided that she was going to tell him,” explains Sue Devaney, who plays Debbie. “I think she didn’t know, and then he says he’s going to the police station, he’s going to confess, then she can’t hold it in any longer.

“It’s boiling over, and I think she just has to tell him. She has no idea how he’s going to react. It’s a big thing. It is massive, to tell your brother that he is really your son…”

The week begins with Debbie, who is certain that she’s going to be locked up, instructing Ryan Connor to run the hotel while she’s gone.

However, Carl soon turns up and berates Debbie for putting Ryan in charge of the hotel instead of him.

Later in the week, Debbie ends up back in a car with Carl. It’s there that Debs reveals the secret she’s been hiding for nearly 40 years…

“I think Debbie has compartmentalised it,” explains Sue. “Carl’s birth happened such a long time ago, and then she watched him grow up, seeing her dad and Elaine bringing him up. In her head, she thought, ‘Yeah, he is my brother’. It’s the story that you tell yourself.”

“She thought he was being brought up well,” she adds. “At the time, Debbie was 16 or 17, she couldn’t look after him. It’s only when she was told, ‘Your life has got an ending,’ and he was there in her life. It brings back a lot of old memories. The truth has got to come out now.”

But how will Carl react to this life-changing discovery?