A/N: Here's chapter 12! Enjoy!

'What the?' Olivia yelled as she saw what was going on inside.

'Maybe we should have stayed outside.' Mason said in a state of shock.

'What are you kids doing home so early?' Stan quickly asked. He was shock by the fact he'd just been caught with another woman only a week after he'd split with Karen. And by his children.

'We live here and it's dinner time!' Mason screamed in reply.

'Who the hell is this?' Olivia questioned in reference to Stan's companion.

'Well, I was going to wait until a later date to introduce everybody but you two need to know now.' Stan began. Olivia and Mason were giving Stan looks as if to say 'Get on with it.' Stan took a breath before continuing his explanation. 'This is Lorraine. She's you're new stepmother.'

Mason and Olivia looked at each other before Mason asked sarcastically: 'I'm sorry. Could you repeat that last sentence please?'

'Lorraine is your new stepmother.'

'I'm sorry, I don't understand. Karen's been gone a week, you've met somebody else and within a week she's our new stepmother?' Mason asked, his voice full of sarcasm.

'We're in love.' Lorraine quietly said. She hadn't expected Stan's children to be confident enough to question their dad about his love life. Mason and Olivia were surprised by her English accent.

'How is that possible? You've only known each other less than a week!' Olivia shrieked, before something set off alarm bells in her head. 'Wait a minute. Unless…' Olivia was trying to work out what she thought. 'Oh my god!' She'd put two and two together and came out with four. 'You've gotta be kidding me!' Olivia shouted in disbelief.

'What?' Mason asked. He didn't have a clue what Olivia was thinking.

Olivia ignored Mason's question. 'Oh my god! You were screwing her while you were married to my stepmother, weren't you?' Olivia was on the verge of tears. She couldn't believe that her father could commit adultery. Mason looked up at Stan, waiting for his answer. Stan merely nodded. The colour instantly drained from Mason's face. He was horrified by his dad's confession. 'I can't believe you!' Olivia yelled. 'How could you do that to Karen?' Olivia asked the question, not really wanting to hear the answer. 'You know what, I don't want to know.' Olivia said as she walked toward the door. 'I can't be in here right now!'

'Olivia, wait!' Stan pleaded with his daughter. 'Let me explain everything.'

'No! I can't even look at you right now!' Olivia shouted as she walked out the door. The disgust in her father was clearly evident in her voice.

'Where are you going?' Stan shouted while the front door was closing.

'Leave me alone!' was Olivia's answer.

'Where is she going?' Stan asked Mason in the hope he would know.

'Maybe if you paid more attention to us rather than going out and screwing you mistress you would know.' Mason gave his spiteful answer before heading up to his bedroom. He knew exactly where Olivia would be going, but he knew his sister better than to tell their father where she was going. He knew that she would never forgive him if he told Stan where she would be.

---

Olivia went straight to where Mason knew she would. 155 Riverside Drive. As she exited the elevator on the ninth floor, Olivia was met by Elliot, who was heading towards the trash chute.

'Olivia what are you doing here?' Elliot asked before noticing her red and puffy eyes. 'Why have you been crying?'

'I need your advice.' Olivia wasn't sure what to do or say now that she was here.

'What's wrong?'

'I think there's a different reason as to why my dad and Karen a getting a divorce.'

'What is it?'

'I think my dad was cheating on her.' Even although Stan had admitted he had cheated on Karen, Olivia didn't want to believe it was true.

'What makes you think that?'

'Mason and I kinda walked in on him with another woman and then we had this big argument and my dad admitted that he was screwing her before he split up with Karen.' Olivia offered her explanation.

'Does Karen know about the other woman?'

'I don't know. That's why I need your help. Do you think I should tell her?'

'Yeah I think you should. She deserves to know. That's if she doesn't know already.' Elliot told her what he thought.

'Do you know where she is?'

'She's still in Uncle Will's apartment. Are you going to tell her now?'

'Yeah.'

'Good luck. You might need it.'

---

Olivia waited outside Will's apartment with Elliot for a few minutes while she thought of the best way to tell Karen.

'You ready?' Elliot asked. It was quite funny how many times Olivia had been asked that question before opening a door.

'Yeah.'

Once inside, Olivia was greeted by the surprised faces of Will, Grace, Jack and Karen.

'What are you doing back here so soon?' Karen asked.

'I need to talk to you.' A very nervous Olivia answered. She sat down beside Karen before asking, 'Why are you and Dad really getting a divorce?'

'Like we told you. We think everybody will be happier.' Karen answered, not knowing what Olivia's reason for asking this was.

'Karen, please tell me the truth. Why are you and Dad really getting a divorce?' Olivia tried again.

'I just told you.'

'Does the name Lorraine ring any bells?' Olivia asked, just in case Karen didn't know.

'Oh. I'm guessing you know about her.' Olivia nodded to give Karen her answer. 'Well, it's true. She is the reason your dad and I are getting divorced.' Karen knew it would be no use telling Olivia a lie. Karen knew she was a smart kid. She'd figure it out somehow.

'Do you know how long it was going on for before you found out?' Olivia didn't know why she wanted to know this.

'I'm not sure exactly. I only know that he met her while he was in prison.' Karen answered Olivia's question. Olivia took a minute to reflect on what she'd just been told. It occurred to her that while they were struggling to deal with the fact that their father was in jail, he was in there meeting her.

'Can I stay here tonight? I don't want to go home.' Olivia couldn't face her dad right now. Karen looked at Will. This was his apartment after all, and there would be no place for Olivia to stay with her over at Jack's.

'Sure honey.' Karen answered, after getting a nod from Will to say it was okay.

---

Back at the Walker penthouse, Mason was still sitting in his room. He couldn't believe what his dad had done. He wondered when Olivia would come back home. He thought that she would probably stay with Karen tonight. Mason also realised, as much as they wanted to kill her for breaking up Karen and Stan's marriage, he and Olivia would have to get used to having Lorraine around the house. Get used to having a new stepmother. Get used to yet another change.

A/N: Okay, I know this is a really bad chapter. Thanks to Panema, karengraciewalker and keisha4 for reviewing the last chapter! Hope you enjoy and I'm sorry if you don't!