There were three questions running through Lestrade's mind as he ran down into the living room after hearing glass shatter and shouting.

What is the whole Baker Street crew doing here?

Why is Donavan laying on top of Sherlock?

Why is John holding a video camera?

2 hours earlier….

"Um…sorry for interrupting…are you guys ready to go home-What the hell are you guys doing?" Lestrade asked as he came into his office. Sherlock and John were sitting on his desk, clearly hiding something behind their backs.

"Oh nothing, Lestrade," Sherlock stated, jumping up from the desk and stuffing whatever he and John had been hiding in his pocket. Greg frowned at the detective, who was smiling at him with those all-knowing eyes. Greg's head snapped over to John with raised eyebrows. John only swallowed a chuckle and jumped to Sherlock's side.

"I'll pay the cabbie this time," John stated, fallowing Sherlock out the door. Lestrade frowned at the two men as they left his office. What were they hiding? Lestrade's eyes scanned the room, looking for anything that may be out of place. Everything looked like it was in perfect order, which for Lestrade was amazing. Greg let out a long sigh and stepped out of his office and out to the cold London air.
"I wonder what they are planning now."

Lestrade sat on the couch, watching old re-runs of Doctor Who. He wasn't really paying attention to the TV show. He was busy trying to guess what John and Sherlock were doing to his kitchen. The smoke alarm had gone off twice now and smoke was starting to curl out from that direction once again.

"If you killed my stove again I'll kill you both!" Lestrade shouted in the direction of the smoking kitchen. Sherlock poked his head out, which would have looked normal except from the fluffy green splotch on his nose.

"Nothing to worry about, Lestrade," Sherlock coughed from the smoke he must have inhaled. "Just a small experiment." Lestrade frowned at the detective. This was no small experiment! They had to be doing something.

"Sherlock, I think it's done!" John's voice shouted from inside the smoke infested kitchen.

"Finally! I'll get the matches.

"No, Sherlock, we have to wait till later to light it up." Lestrade's stomach tightened. What were they lighting up? Oh god, if it's another bomb his landlord is going to kill him! Sherlock must have noticed Lestrade's worried face because soon Lestrade found Sherlock pushing him into the bedroom.

"You look terrible; get some sleep," Sherlock stated before shutting the door. Lestrade collapsed on his bed, listening as John and Sherlock ran around his flat doing who knows what. He felt his eyes suddenly grow heavy and was out in a matter of seconds.

Lestrade woke to find that it was quiet. There was no running or clattering of glass or other breakable things. Lestrade slowly lifted himself from his spot on the bed and dashed downstairs. This much quiet was never a good thing in his flat now days. Lestrade looked left and right, searching for his two friends, but as he came to the kitchen his heart clenched. Everything was gone! The severed body parts, beakers, experiments, and everything else that would have shown that Sherlock Holmes and John Watson had stayed in his flat was gone. What was going on? Where was everyone?

"SURPRISE!" Lestrade jumped as Sherlock and John jumped out of nowhere, holding a big green frosted cake.

"What? Why are you-"

"It's our farewell present, Lestrade," John stated with a wide smile.

"Farewell present?" Lestrade asked. What was going on? Who was leaving? Something didn't fell right. Sherlock laughed loudly, patting Lestrade's back.

"Oh, they finished building 221B! We're going home," Sherlock stated. Lestrade's heart clenched. Already? How did the time go by so fast?

"Yep, see ya, Greg," John shouted, flinging open the door for Sherlock. Sherlock handed Lestrade the cake and stepped through the door, leaving the DI alone in an empty flat.

Present Time…

Lestrade shot up from his bed blinking in terror from his nightmare. It was just a dream. Everything was alright. CRASH! A smile curled over his face at the lovely sound. They were still here. Lestrade shot from his bed, running downstairs to see a sight he never thought possible. Mrs. Hudson, Molly, Anderson, and several other people from the Yard were in his living room. Sherlock was lying on the floor with Donavan on top of him. Both of them looked shocked and were tangled in streamers. John was standing at their side with a video camera in his hands. He was laughing at the two fools lying on the floor.

"Um…What's going on?" Lestrade asked, stepping out into the room so everyone could see him. The crowd froze and Donavan and Sherlock popped to their feet, blushing slightly.

"SURPRISE!" Everyone shouted, laughing happily. Lestrade frowned at them and watched as Mrs. Hudson brought out a green frosted cake. Oh no. Was it really happening? Were they really leaving? Lestrade felt as though he may be sick, but when he saw the writing etched out on the cake his heart calmed.

Happy Birthday

Lestrade smiled at the birthday cake. He had been so worried that he had completely forgotten about his big day. What and idiot! Lestrade smiled up at everyone thanking them for everything.

"Well, let's eat!" Mrs. Hudson called, cutting the cake for everyone. John walked around the room, capturing everyone's happy smiles on camera as they bit into the cake. Lestrade took a bight of cake and glanced over to Donavan and Sherlock, who were clearly avoiding each other.

"Why were you two on top of each other?" Lestrade finally blurted. Sherlock choked on his drink and Donavan looked as green as the cake. Maybe Lestrade didn't want to know.

"Oh, they were putting up the streamers and Donavan fell so Sherlock (being the good Samaritan he is) tried to catch her, but it just ended up with a pile up," John stated simply. Lestrade broke out in laughter, picturing the two in his mind.

"Please tell me you got that on tape!" Lestrade giggled. John smiled widely and waved the camera happily.

"This year's Christmas present," John chuckled evilly. Sherlock looked like he was going to be ill and Lestrade couldn't help but laugh. He was so glad that they weren't leaving tonight. He knew that eventually they would be leaving, but at least they would have memories like this to keep them going.