"I'm going to make you pay for what you've done." Jason informed Katy angrily. He took several steps towards her. "When my boss asked me to keep an eye on someone called Katy Mitchell I couldn't quite believe it was you. Then I saw my chance to get revenge."

"Forgive me if I'm not quaking in my boots." Katy replied, rolling her eyes. She turned towards the door, intending to physically marshal her grandmother out of the flat. Jason wrapped his hand around her wrist and yanked her backwards. "Get your damn hands off me."

"Make me."

"Don't tempt me." She shot back, clenching her fist.

He laughed, letting go of her and crossing the room to snatch up a packet of cigarettes. "Face it, little girl, there is nothing you can do to me."

"You're going to leave, Jason. You're going to go somewhere else and you're going to stay there. I'm never going to hear from you again. Nina is never going to hear from you ever again. Do you understand?"

"I don't think so. They're mine and there's nothing you can do about it."

"Gran… please just go and get in the car." The young woman ordered in a harsh voice, her resolve hardening and her gaze never leaving the man in front of her. She pushed her hand into her bag, grasping an awkwardly shaped object and catching Glenda's attention.

"And leave you alone here with him? Not a chance."

Katy took a step forward, closing the gap between herself and Jason. "You need to leave."

"What are you gonna do about it?" He asked, laughing coldly and taking a step towards them.

"It's your choice." Katy said coldly. She raised her arm and the thing that she'd been hiding from view suddenly came into sharp focus. "You go now or you go permanently."

"Where the hell did you get a gun from?" Glenda hissed, looking fearfully between her granddaughter and the weapon in her hand.

She didn't know whether she was impressed or terrified at the fact that Katy's hand wasn't shaking at all as she aimed the gun at Jason. The determined, ruthless glint in the young woman's eye was just as alarming, as was the fact that she didn't seem to have any qualms about the course of action she had decided on.

"Ask me no questions…"

"Katy, come on–"

"You're not going to shoot me, little girl." Jason laughed, shaking his head and taking two steps towards her. "You haven't got the guts."

"Stop calling me that." She ground out.

Without thinking, without blinking, Katy pulled the trigger. The sound was drowned out by Glenda's scream as she watched the bullet hit the young man and sent him careening backwards. He crumpled in a heap, motionless and bloody. For a moment there was complete silence, before Glenda rounded on her granddaughter, eyes wide with fury and terror.

"What have you done? Katy… you've… oh my god!"

"Calm down, Gran." The younger woman cautioned calmly. "I really don't want to have to slap you."

"Don't you touch me!" Glenda gasped out, her eyes dropping to the body on the floor. "Oh my god… have you actually killed him. What if… what if he's not…?"

Katy snorted. "When I kill someone they tend to stay dead."

"When you… when you kill someone? Are you telling me this isn't the first time you've…"

"I've never shot anyone before." Her granddaughter reasoned. "I don't think I have, anyway…"

Putting her hand to her forehead, Glenda moved towards the sofa, clearly intending to collapse onto it. Katy's hand shot out and wrapped around her wrist. She shook her head vehemently.

"Don't do that. Don't touch anything." She ordered, pushing the gun back into her bag. "Did you touch anything?" When Glenda simply shook her head weakly, she nodded quickly. "OK, let's get going."

"But are we not going to–"

Katy glanced at the body, the unseeing eyes staring back at her, shaking her head. "No. As long as no one sees us leaving and you really haven't touched anything, it'll be fine."

The older Mitchell felt queasy at the matter-of-fact tone her granddaughter was employing. She pushed her hands into her coat pockets to remove any chance that she would accidentally leave fingerprints on her way out and followed the younger blonde quickly. Katy paused in the hallway, letting Glenda step through the front door first and looked around quickly.

"You sure you didn't touch the door?"

Glenda shook her head. "It was open."

"You didn't push it?"

"Uhh…"

"Think, Gran. It's important."

"I think maybe I… I brushed it with my arm when I walked in."

"Not your hand?"

"No." Glenda shook her head again, more sure this time. She touched her upper arm quickly. "No, it was definitely with my arm."

"OK." Her granddaughter nodded, covering her hand with her sleeve and pulling the door closed. "Let's go. I've got to be at the hospital in… fifteen minutes. We can make it if we hurry."

"You're not seriously considering–"

Katy shot her a look. "Keep everything normal, Gran. I have an appointment and I'm going to that appointment."

"How are you so calm?" Glenda demanded as they headed towards the car. "How can you possibly go about things normally after what you've just done?"

"Because I have no choice, Gran." She pointed out bluntly. "He got what was coming to him and I am not going down for it. I can't."

"What if–?"

"I'll deal with it, alright?" Katy promised, waiting for the older woman to unlock the doors and let her in.

"I've just seen how you deal with things."

There was a pause as Glenda put the car into gear and started driving back in the direction of Walford general. Her hands were gripping the steering wheel so tightly that her knuckles were white from the strain of it. She clenched her jaw as she forced her gaze to remain on the road in front of her, rather than turning to look at her granddaughter.

"I'm sorry you were there for that, Gran."

"You're much more like your grandfather than I realised."

Katy swallowed thickly, before turning her head and staring out of the window. "I just… I saw red."

"How many?"

"Hmmm?"

"You said when you kill people they tend to stay dead. How many people have you killed?"

"I…"

"Tell me the truth. How many?"

"Four… I think."

"You think?" Glenda demanded, not even able to bring herself to dwell on the number her granddaughter had given her.

"It's a bit… I don't like to think about it. I don't remember how or when or…"

"Who?"

"I…"

"Who, Katherine?"

"Ruby's dad." She admitted in a small voice. "He threatened me and Ruby and I snapped… Dean, too… his brother."

"You…?" Glenda's mouth dropped open. "I thought you said he'd taken the money and gone…"

"I lied." Katy told her quietly. "I killed him."

"Who else? I'm assuming Jason is the fourth. Who was the third?"

"Carl White."

"Roxy's boyfriend, Carl?" Glenda demanded, pulling into a parking space in the hospital car park and turning to scowl at her granddaughter. "Why?"

"He attacked Mum. I walked in on him trying to… I had to stop him and I did."

There was a long pause as they both stared straight ahead of them out of the car's windscreen. Katy swallowed thickly, wishing that Glenda had never offered to come to the hospital with her in the first place. Glenda was just trying to get her head around what she'd leant about her eldest granddaughter, doing her best not to let it completely destroy the way she felt about the young woman.

"What the hell happened to you to make you think that killing people was a way of solving problems?" The older blonde demanded harshly.

Katy was unable to stop herself laughing mirthlessly at that. "Have you met our family? We solve most things with violence or threats."

"I just… I don't know what to say to you." Glenda admitted with a shrug. "You're not… you're not the person I thought you were."

"I'm still the same person, Gran. If you hadn't gone into that flat you'd never have known."

"That makes it worse!" She replied. "Don't you see that? The fact that you can hide what you've done so well that no one knows–"

"I have no choice!" Katy pointed out. "It's for the kids… everything I do is for the them. If anyone finds out what I've done… I grew up without Mum and Dad… I won't let that happen to my kids."

Glenda exhaled deeply, putting her head in her hands. She couldn't bring herself to look at her granddaughter, but she knew that Katy was serious about what she was saying. She knew the younger woman well enough to know that everything she did was for her girls. Now, with another baby on the way, it was even more important that Katy's dark secrets stayed hidden.

"Please, Gran… you can't tell anyone about any of it." She almost whispered. "Please… even if you hate me for it, you can't say."

Turning, the older woman reached out and grasped her granddaughter's hands tightly. "I could never hate you, my darling. Never. I just never… I had no idea that you could be capable of…"

"I know… I hate the fact that I am capable of it… I never intended things to go this way…"

"No more." Glenda told her firmly. "You've got to get out of all of that. You can't afford to get caught and sent down… You need to concentrate on the kids and the bar and staying on the right side of the law."

"I know." Katy nodded, swallowing thickly. "I know."