Ethan glanced over at his brother momentarily. He was red-eyed and had faint tear-tracks on his cheeks. Ethan knew his brother had been crying - he seemed to do it a lot these days. If he wasn't drinking or sleeping, he was crying or on the verge of crying. Or talking to Charlie. (The only person he seemed to engage in conversation with.) Ethan wondered if Charlie knew something he didn't. Of course, everyone knew about Matilda. Yet, this was different. Charlie would approach Cal, or Cal would approach Charlie - although the former happened more often. They were always whispering, and if they noticed Ethan looking, they would stop and go their separate ways. They were hiding something from him, something that was affecting Cal's life. Ethan had to find out what.

"Charlie!" Ethan called across the nurse's station. The nurse looked up, then looked straight back down again; giving no indication he heard the doctor. Ethan sighed angrily, then approached him further. "Charlie." This time Charlie held his gaze and Ethan walked right in front of the desk he was leaning on.

"Can I help with anything, Ethan?" He asked politely, looking over Ethan's shoulder. Ethan whipped his head around to see Cal looking at them, before he looked back at his patient. The younger brother felt a surge of anger rush through him. Something was going on with his brother and Charlie and it annoyed and frustrated Ethan to know he wasn't in the loop. It concerned his brother. He had the right to know.

He narrowed his eyes at the nurse, "what's going on with my brother?"

"Something's going on?" Charlie asked innocently.

Ethan shut his eyes and took a deep breath. "Can we go to the staffroom, Charlie?" He said as he opened his eyes. Charlie nodded and they both made their way there. The door shut behind them, blocking out most of the noise of A and E. "Please, Charlie. Cal's my brother - I need to know what's going on."

He watched Charlie hesitate, before - "Matilda. Losing Matilda really got to him."

"I don't believe you, Charlie. Please, please just tell me," he begged, eyes pleading with the nurse. "Please."

"I... I can't tell you, Ethan," Charlie admitted.

"So there is something going on." Ethan devised. "Please, Charlie. He's all I have left. I have to know. Please."

Charlie sighed and shook his head, "Cal's going to kill me," he muttered, and Ethan was confused as he listened. Charlie nodded slowly to him, gesturing to the sofa, "come and sit down, Ethan."

Ethan did as he was told, not really liking where this was going. "Get on with it." He said, once he and Charlie had sat down next to each other.

"When he got the paternity test results, he didn't notice at first, but his blood work didn't seem right." Ethan went to interrupt, but Charlie held a hand up to halt him. "Just listen. He noticed his blood group was O - whereas your mother's blood group was AB. You know, as did he... that it is impossible for that to happen. So... he did another blood test - "

" - but why didn't he tell me?" Charlie looked pointedly at him. "Sorry, carry on."

The nurse glanced at the door, before carrying on. "He did another blood test... and the result was the same. The blood work wasn't wrong. Cal found out... Cal found out that he was... he was..."

"He was what, Charlie?" Ethan insisted. Charlie stayed silent. "Charlie, what was he?!"

"He was... adopted, Ethan. Cal found out he was adopted."

Ethan started to shake, his heart started to pound. "N-no. That... that makes no sense."

Charlie laid a comforting hand on the doctor's shoulder, and Ethan made no effort to shrug it off. "Ethan I need you to listen to everything I say, alright? I know you're confused, and I know you have questions, but calm down and listen." Ethan nodded clumsily, laying his head in his hands. "He went to see Emilie - his birth mother. He found out that you and him were adopted together. He was terrified that you weren't related by blood, but you are. That's why he didn't tell you straight off. He needed to know that you were. He needed to have answers to questions you might have for him. Following so far?"

"But... but he didn't tell me... at all..."

"There's something else, Ethan," Charlie said sincerely. Ethan picked up on the tone and realised there was something terrible that Charlie and Cal were keeping from him - but before Charlie could continue, the staffroom door burst open. Ethan looked up and watched as his older brother stormed in.

"I'm sorry, Cal. He needed to know," Charlie told him softly.

"No! Since when did you have the right to tell him?!" Cal shouted.

Ethan stood up and pushed Cal away from Charlie, and shouted at Cal. "Since when did you have the right to keep this from me?!"

Cal's face dropped, "Ethan, I'm so sorry. I wanted to tell you - but I was scared one of us would have it - "

" - Cal." Charlie stopped him. "I haven't told him that."

Ethan looked between the pair.

"I better leave you two to it," Charlie said, walking out and leaving a very angry Ethan and a very regretful Cal behind.

"Told me what?" Cal stayed silent. "Told me what?!" He shouted at Cal. Ethan waited for Cal's answer, but all that came were tears flowing out of his eyes. Ethan pushed Cal with so much force he nearly fell backwards - completely ignoring the pain that spiked his shoulder. "Caleb Knight! Told me what?!"

Cal looked like he was going to break down any minute. "Emilie has Huntington's disease."

Ethan stepped back in shock... that meant one of them could have it. Not only were they adopted, lied to for years, but they could have inherited Huntington's. "Why didn't you tell me sooner?" Ethan ground out.

"I was too scared to tell you."

"You told Charlie. You told Charlie before your own brother!" He shouted, balling his hands into fists at his side. "What part of 'brother' don't you understand?! This is something huge, Caleb! And you didn't think to tell me?! There is a chance that either of us could have it! 50/50 that you could have it, 50/50 I could have it! What if one of us does have it, Caleb?! What then?!"

"I don't know..." Cal whispered.

"Why the hell didn't you tell me?! How long were you going to keep it from me?" Ethan questioned, breathing quickening from frustration. "I asked how long!"

Cal started to approach Ethan. "I'm sorry, Ethan - "

" - don't come anywhere near me. I don't want to see you. You and Charlie can stay out of my way. I don't want to ever see you both, ever again! Move out too, move out by tonight. When I get home, I do not want to see you or any of your stuff - do you hear me! Nothing!" Ethan shouted, storming out of the staffroom and slamming the door. He couldn't deal with this. He couldn't deal with Cal. He couldn't.