"Have you told Tess about your scan today?" Luke asked as he pulled his shoes on whilst sat on the stairs.

"Yes." Alice half sighed; half laughed as she appeared behind him and kissed the top of his head on her way past.

Luke was worrying more and more as the pregnancy progressed. But this was Luke all over. He was just a worrier; he always had been. Despite having raised Lillia and Maisie just fine he was still incredibly worried as he had never raised a baby before, let alone two at the same time.

"Ready?" Alice asked as she appeared in the doorway of the living room.

"Yep." Luke replied standing up and picking up his keys.

He looked at the picture of his family on the wall. The house felt just a little bit emptier now that Maisie had gone back to university in London. Luke unlocked the door and off the couple drove to the hospital.

As soon as they walked through the door. Charlie came rushing over.

"Ah good. You've arrived just in time. We have at least 30 inhalation victims' minutes out." Charlie explained.

"What have they inhaled?" Luke said as he handed his coat and bag to Noel to look after seeing as he didn't have time to go to the staff room.

"Not sure yet. Sounds like some kind of chemical spill though." Charlie continued as they walked further into the ED ready for the ambulance bay doors to open.

Right on cue, the doors burst open and in came Dixie and Jeff with a trolley.

"Anhydrous ammonia victims, at least 30 more in coming." Jeff said to Luke.

"Ok straight through to resus please." Luke told Jeff.

Just like that the patients didn't stop coming. They were being brought in by paramedics as well as the fire fighters who had attended the scene. Charlie and Luke stood their directing the patients as more and more coming in. Luke turned to Mac as he walked past.

"Round up as many oxygen tanks as you can find." Luke said to Mac.

"Of course." Mac replied.

Just then Ash came running over.

"What have we got?" He asked.

"Industrial ammonia leak. We have got at least 30 coming in." Luke told him.

"We are already full to bursting as well with other patients." Charlie continued.

"Ok plan. Charlie find Lily, tell her to start discharging as many patients as possible to start freeing up some space. Ash, start sorting patients from worst to they aren't going to die today." Luke told them both.

They both agreed with Luke and they all sprang into action. Luke went back towards reception, which was full of patients, many of which were already moaning at the Noel who was doing his best to try and contain the situation. Luke stood up on a chair and blew the whistle that he had on his key chain. Everyone went quiet and looked at him.

"Ok, I understand that you are feeling unwell. But we have just had a very major incident come in but we are going to your patience to help understand the waiting times might be slightly longer than usual today. If you are here because of the ammonia leak, you need to make your way over to this side of the reception. If you are here because of another minor injury that isn't life threatening. I will need you to move over to the side…."

Luke was interrupted by a man on the other side of the reception who had climbed up onto a chair as well.

"Sir I'm going to need you to step down from there…" Luke began.

"If you think that the Ebola outbreak is bad. Then you haven't seen nothing yet…" The man began. He reached into his hand and pulled out what looked like a grenade. "I am the apocalypse."

The man the pulled the pin out of the grenade held it up in the air. People started to scream. Just then Luke felt someone push him out of the way, he crashed to the floor and when he looked up, he saw his friend, Matt Casey, from the fire service running towards the man. Casey talked him off of this chair then grenade went flying out of the man's hand, but it exploded mid-air. Luke covered his face, once initial impact from the explosion settled, he got up. He looked around. Reception had been ripped apart. Patients were coughing and screaming still.

"Casey? Casey what the hell happened?" A voice was calling out, but it sounded like it was coming from a radio. The Luke realised he knew the voice. It was Casey' station officer, Stephen Lloyd.

Luke stood up and checked himself over, he hadn't been injured. He saw Noel had stood up as well. He had been pretty well shielded by his desk.

"Noel, are you ok?" Luke asked as he went over to check on his friend.

"Yeah, I'm fine." Noel replied.

"What did he say? The bomber." Another voice said. Luke looked around; it was Jac. She was also heavily pregnant. Her and Alice were both due around the same time.

"Jac? What are you doing down here? Are you ok?" Luke said rushing over.

"I'm fine. I was down here for a CT consult. I was the other side of the doors went it went off." She told him, in her usual dismissive tone. "Now what did he say?"

"Something about it being worse than Ebola." Noel said to her.

Jac and Luke looked at each other and gasped at the same time when they realised.

"We need to lock down the ED. Nobody can leave." Luke told Noel.

Noel went rushing over to doors to prevent people from leaving. Luke bent down and found the Casey's radio was at his feet, but there was no sign of Casey himself. Stephen was still asking for an update on the situation.

"Stephen, it's Luke Stone here. A man has just blown himself up, he said that it could be worse than Ebola. We need everyone brought back in that could be infected and Steve, Casey tackled the guy to floor just as the explosion happened. I don't know where he is."

Luke looked at the door, he could see that people were trying to push past Noel and the security guards. Luke ran over to help.

"Guys, you can't leave. This is very serious…. ma'am I know your scared, I am too but we need to stay here otherwise you'll infect the whole city."

Luke started to look around for Casey, but he couldn't see him anywhere. Some of the other firefighters came over to help on the doors as they had heard over their radios that nobody could leave. He found Mac tackling a small fire with a fire extinguisher. Luke went over.

"Hey, leave that for the professionals. I need you to gather supplies for me because you know this place better than the fire boys." Luke reassured him.

"Right, you're right Lukey." Mac half-heartedly smiled at him.

Jeff and Dixie were still in the ED along with some other paramedics performing primary surveys on patients.

Just then Ash came rushing back over.

"Luke are you ok? Alice rang me saying you weren't answering your phone." He asked.

Luke looked at his phone he had five missed called on it from Alice. He felt guilt punch him in the stomach.

"I'm fine," He replied. "Where's Alice? Is she ok?"

Luke frantically started looking for her. Ash took him by the shoulders.

"She's fine, I sent her up to the pharmacy before the explosion happened, she was nowhere near her. I've told her not to come back until it's safe because we don't know what we are dealing with and she's pregnant." Ash assured him.

"Thank you. Thank you." Luke smiled. "Ash, we need to set up a decontamination area, we need to open up the staff showers and patient showers and start washing people down."

"Hey Luke! Its Casey!" Dixie shouted across to him.

Luke and Ash went running over.

"He's got a weak pulse, trauma to his back and chest. Looks like some shrapnel from the grenade." Dixie told him.

"Grab a trolley. I need to tell Stephen whats going on." Luke said.

Luke stood back up and radioed Stephen to him what had happened to Casey. Ash had gone with Casey to start his treatment.

"Chief, it's Stone. Casey has taken a pretty bad hit from the explosion; he's got trauma to his back and he's got some embedded shrapnel from the grenade. It's looking not great; he should have been black tagged straight away but I'm not letting that happen." Luke told Stephen over the radio.

"Ok," Then there was a pause and a deep sigh. "Keep me in the loop."

"Will do Chief. You have my word." Luke promised.

Just then he heard someone coughing, he looked around and it was Charlie propped up against the nurse's station. Luke went over to him, he got his torch and shined it in Charlie's eyes.

"Tell me your name?" Luke asked.

"What? You know my name Luke we've known each other 6 years." Charlie said to Luke.

"I know that I know your name. I need to make sure you know your name." Luke told him.

"I'm Charlie." Charlie replied.

"Good. It's also good you know my name and how long we've known each other. But I do think you have a mild concussion. Do you want to just sit there until I can check..."?

Charlie cut Luke off. "I'm Charlie Fairhead. Born 26th January 1954. I married my life Barbara in 1998 and we have one son together, Louis, who was born in 1996. Me and Baz got divorced in 2001. Do you want me to carry on?"

Luke chuckled. "No, we're good."

"Luke." A voice called out. It was Jamie.

Luke rushed over; he was with a patient who was slumped against a wall.

"He's airways clear. His airway and circulation are both good...oh and his name is Roger." Jamie told Luke.

"Hi Roger, can you hear me ok?" Luke asked.

"Yes." Roger wheezed.

Both Luke and Jamie looked down at his chest. They found the reason why Roger was struggling to breath.

"Is ummm...that his rib?" Jamie asked.

"No, that is... that's someone's ulna," Luke looked around the ED for a body, then he found one. He pointed at it. "His to be exact. Jamie I'm going to need some tape, bandages, gauze and a cast saw and let's get some IV antibiotics in whilst we are at too please."

"On it." Jamie said. He stood up and went get Luke what he needed.

"A saw? Doctor I am going to be ok?" Roger asked.

"Roger, I need you to stay perfectly still that way you will be just fine." Luke explained.

"Doctor I want you to explain exactly what is going on, don't sugar coat it for me Doc just tell me straight." Roger asked.

"Ok Roger. I am not going to remove the bone right now." Luke told him.

"Why not?" Roger demanded.

Just then Jamie came back. "I got it all, I also got 5 milligrams of midazolam as well to help with pain."

"Thanks Jamie. Roger would you like a sedative to help make you feel more comfortable?" Luke offered.

"No. I just want this damn thing taken out of my chest." Roger retorted.

"Roger, I am going to level with you because believe or not that bone is keeping you alive at the moment, if I remove it that's when you'll be in trouble. So I'm going to cut the bone down then wrap it and secure it to prevent it from doing any damage to your lung. I'll remove it just as soon as I can get you into theatre, ok? Now do you want something to make you feel more comfortable?" Luke was honest with Roger just as he asked. That's all some people need in a crisis like this, some honesty.

"No thanks doc. You just do your job." Roger smiled.

"Jamie, I'm going to need you to hold the bone perfectly still but keep Roger distracted for me." Luke whispered.

Jamie nodded. He bent down and spoke to Roger. When then time was right, Luke sawed through the bone sticking out of Roger's chest. Roger whimpered a lot, but Luke had sawed through the bone in a matter of seconds.

"Well done Roger, really well done." Luke smiled as he handed Jamie the bone fragment to dispose of.

"Thank you, doctor." Roger smiled back.

Luke lent Roger forward so he could wrap the remaining bone to prevent it from causing any further damage.

"I'll be back soon but Jamie here will stay right with you ok. He's one of our best nurses so if you need anything just speak to him." Luke told Roger.

Luke stood up and went to find where he was needed next. As he walked past reception, he saw what was left of the guy that caused this mess. Luke turned to one of the firefighters that had been caught in the ED when the grenade exploded.

"Hey, can you chuck a sheet over him, please. People don't want to be reminded of who caused all this mess." Luke said to the firefighter.

"Sure."

Luke carried on walking when he saw one of the other firefighters he recognized, stood on a trolley with his head in the ceiling. His head reappeared just as Luke walked past.

"Kidd what's the matter?" Luke asked.

"I don't want to add to your problems, but the whole electrical system is burning up there, in five minutes we won't be able to breath with amount of smoke that is going to fill this room." Kidd told Luke.

"Ok. I've had worse odds." Luke said trying to remain calm. "Can you manage it?"

"No, we've just used the last of the extinguishers." Kidd said.

"Of course. Right you just do what you can, I need to go treat some more people." Luke said.

Luke went around helping people as best he could, but they only went so far. Once they did all the could in the ED, they just had to play the waiting game. Luke heard that Kidd had managed to put the fire out which was one less problem that Luke had to worry about, he just had to worry about all the patients that needed help from other departments and the fact that he may have been exposed to a deadly disease which may kill him and he never gets to know his children.

Luke walk was just walking circles around the ED not knowing where he would be much use.

"Oi doctor!" A voice called out.

"Yes sir?" Luke turned to face the man.

"What's the situation?" He demanded.

"Everyone is doing the best that they can." Luke said calmly.

"What does the even mean anymore? No is telling us a thing." The man shouted at Luke.

Luke needed to stop this before the situation got out of hand.

"Hey, sit down and be quiet because I tell you what if you kick off, everyone else will and then we'll all be trapped for even longer because we'll have a riot on our hands that I'll have to subdue before I let anyone in or out of this ED. Do you understand?" Luke said sternly to the man.

The man just stared at Luke, but Luke wasn't going to back down. His time in the army had taught him never to back down in a situation like this. Luke didn't know how long the two of them had been staring at each other but eventually he went to sit down.

Luke turned away from the man but almost as soon as he did, he saw the reflection of the man coming towards him with a piece of debris in one of the computer screens. Luke managed to dodge out of the way before he was hit.

"I am walking out of here right now!" The man shouted.

"You really don't want to try that. I've been trained be the British Army and I will have down on the floor before you know it." Luke said.

The man raised the debris he had picked up as a weapon and before he could take his first step, Jamie had jumped at him and injected him with a needle in his arm. Luke grabbed hold of the man and pulled him down.

"Good job Roger didn't want that midazolam." Jamie chuckled.

"Yeah. Thanks Jamie." Luke smiled.

Ash came walking over just as Luke and Jamie stood up. He must have finished treating Casey.

"How is he?" Luke asked.

"He's stable. He's got a good chance." Ash reassured him.

Just then Zoe phoned Luke.

"You picked the wrong day to have off." Luke said to her.

"I'm outside but they won't let me come in. Are you ok? How is everyone holding up?" Zoe asked.

"We are doing ok all things considered, but Zoe I'm terrified that guy could have been some sort of biological weapon from what I'm hearing... Have you heard how much longer we are going to be in here? Eventually patients are going to start dropping like flies or I'm going to have a riot on my hands." Luke said to her.

"I've got no idea Luke, but they are working on finding out what it is as quickly as they can."

Ok...oh and can you tell Stephen that Casey is stable and he's got a good chance of full recovery."

"Sure thing." Zoe said.

"Zoe, can you do me a favour?" Luke asked.

"Sure." She replied.

"Find Alice and tell her that I love her and if I don't make it out of here..." Luke started to cry.

"Luke listen to me. You are going to get of her, and you'll be able to tell her that yourself." Zoe reassured him. "I've got to go the police need to speak with me. I'll phone you as soon as I know anything else."

"Thanks Zoe. Speak soon."

"Speak soon Luke." Zoe replied.

Luke hung up the phone and took a deep breath. He looked up and saw the chief of pathology come out of the cubicle that she had been working in to determine with that all been infected with a killer disease.

"And?" Luke asked.

Everyone in the ED stopped and looked to her.

She sighed, then broke out into a smile. "Not contagious. He tested positive for Influenza A but whatever he tried to kill us with hadn't incubated and died with him."

Everyone and started to applaud. Luke put his head in his hands and sunk to the floor. He felt someone put an arm around him, he looked up, it was Jac. He pulled her into a tight hug. Luke took a deep breath and stood back up. He turned to Noel.

"Open up the ED." Luke told him.

"With pleasure." Noel smiled.

Luke bent over and picked up Casey's radio.

"Chief, its stone. We're got the all clear, not contagious. We're reopening the ED." Luke said.

"Fantastic." Stephen voice crackled back down the radio.

Luke went back over to Roger with Jamie.

"Jamie is going to take you upstairs to get that thing pulled out of you and then you can be on your way home." Luke told Roger.

"Thank you, both of you." Roger said quietly.

"It's not a problem." Luke reassured him.

Luke went back into the staff room after he had helped all the patients as best as he could. He picked up his bag and Alice's belongings too. He went outside, he felt the sun on his face and then he looked across the carpark and saw Alice waiting for him. He ran over and pulled her into a hug.

"I love you." Luke whispered.

"I love you too." She whispered back.