Option #4: Johnlock, House/Sherlock Crossover
"Sherlock, are you sure you want to do this?" John Watson asked as he watched his husband pack his suitcase.
"My mind is made up, John."
"Yes, but you only found out this information yesterday. You need more time to adjust, more time to think things through."
Sherlock grabbed a small pile of silk shirts and carried them to his case, placing them on top of a pile of tailored trousers. "I didn't sleep last night, had plenty of time to think." He moved on to socks.
John shook his head and pinched the bridge of his nose. "Sherlock, for normal people, it can take years to come to terms with the fact that their parents aren't who they think they are. I know you're far from normal, but you can't honestly tell me that you've worked everything out in a twenty-four hour period!"
"I'm leaving, John. Plane leaves for New Jersey in one hour. Are you coming or not?" Sherlock stopped packing for a moment to turn and give John a look that said Go pack because you know you're coming.
John let out a long breath. "Fine, I'm going to pack," he grumbled before moving towards the closet to fetch his suitcase.
Twenty-four hours previously…
"Sherlock, come eat. I picked up ginger pecan chicken for you," John called.
"One minute," the reply came from the window.
John wasn't sure what Sherlock was doing, but it involved dangling an apricot attached to a bit of string from the window. Perhaps he was looking to see how many people noticed the fruit? John shrugged and smiled. At least this experiment didn't involve acid. A few minutes later, they were both seated at the experiment-free end of the table eating their Chinese take-away and they heard a knock at the door downstairs. Mrs. Hudson answered a moment later, "Mr. Holmes! How lovely to see you. They're just upstairs."
"Mycroft," Sherlock groaned, dropping his forkful of fried rice.
"Sherlock, John…" Mycroft said upon entering.
"Sorry, Mycroft, only ordered enough for two. 'Fraid you'll have to leave," Sherlock snapped.
Mycroft smiled. "Thanks, but I'm not hungry. I have information that you should know."
"Yes, yes, we all know about your torrid love affair with cake."
"Sherlock…"
John watched them volley insults for another minute before breaking it up. "Boys…" he said stepping between the two brothers. "What have you come to say, Mycroft?"
Sherlock glared at John as though he'd betrayed him, but didn't say anything when Mycroft began to speak. "It involves our father… our biological father."
"You mean… your dad isn't your actual dad?" John asked looking between the two men. "Why didn't you ever say anything, Sherlock?"
The tall dark haired man shrugged. "The topic never came up."
"He's alive, and I have his location," Mycroft continued.
At this Sherlock's brows furrowed and his mouth dropped open a bit. "But… Mummy always said…"
"I know what Mummy always said, Sherlock, but I have discovered otherwise."
"And why are you coming to me with this information? He obviously didn't want anything to do with us."
"Just thought you might want to know," Mycroft said as he set a folder, presumably with their biological father's information, down on the table. "I have digital copies of this information. You can keep this, and I'll be on my way then."
John moved to show Mycroft out. As soon as the door had shut, he turned back to Sherlock who was staring at the folder. "Sherlock?" he ventured, taking a step forward. Sherlock's head jerked up and his eyes for a moment looked slightly wilder than normal, but the next moment they were the same as usual. "Did you want to look?" John asked.
"No," he replied immediately.