Just an idea that hit me one day. Please review! But, no fires. This is my first Merlin fanfic.

~The Half-Sister~

It was early in the morning, just before sunrise. The people of Camelot still slept in their beds, but for one unfortunate girl her life in was in mortal danger.

The girl wore a simple dark blue gown that made her blend into the dark world around her. Her long black hair flew behind her as she galloped on a strong black stallion. Her light blue eyes were full of panic and fear. Her breath was ragged and the sound of her beating heart was deafening.

She entered the small evergreen forest that led to Camelot's castle walls.

The sound of her horse's hooves hitting the stone road that led up to Camelot brought comfort to the young girl. She was almost there.

Ahead of her, two guards dressed in chain mail and red shirts baring the symbol of Camelot stood guard. They each carried a lance and their swords were strapped to their belts.

"Who goes there?" one guard bellowed as the young girl road up.

She halted her horse. "I'm here to see the Royal Court of Camelot's physician, Gaius. Or his attendant, Merlin," she added.

"Ah, now what is your name, miss?" the other guard asked.

"My name is Allegra," the girl replied with new-found confidence.

Just to prove her point she sat up a little straighter in the saddle, as if she was an important dignitary.

This did not go unnoticed by the two guards who exchanged looks of astonishment and interest. "What is your mission, Lady Allegra?" they asked.

"I wish to pay a personal visit to an old friend," she said simply.

The two guard whispered to each other. They kept glancing at the girl as they talked, but Allegra kept her poised position. She had to act important, it was her only way of getting into the castle at this time of hour. And if they sent her away... she could be dead before the sun even rose...

One guard cleared his throat. "Alright Miss Allegra. You may pass through, only by escort," he added.

"Thank you, sir," Allegra replied.

She dismounted off of her horse and one of the guards held it while the other guard motioned to a guard inside to raise the gate. The gate slowly rose and the first guard handed the second guard the horse and they started into Camelot. Allegra followed behind.

The horse was left in the courtyard, while Allegra was led down a narrow stone corridor. They made a left and at the end of this corridor they came to an old wooden door. Three stone steps led up to the door.

"The private chambers of Gaius, miss," the guard announced. "He should be awake now."

"Thank you."

And with that he turned on his heel and walked back. He sensed that the girl was no threat to Camelot.

Allegra took a deep breath and her heat began to pound again. She raised her left hand and knocked on the wooden door. The sound of muffled footsteps could be heard through the door.

Moments later the door swung open and an old man with shoulder-length silver hair appeared. He wore a long brown tunic. Winkles filled his face, but the face was kind and gentle. He assessed the girl.

"I thought you were Morgana for a moment," he mused. He then faced the girl again. "Who exactly are you?"

Before Allegra could answer a young boy with black hair and blue eyes--identical to Allegra's appeared behind the old man.

"Is it Arthur?" he groaned.

He looked to meet Allegra's eyes and he gasped a little. He pushed Gaius aside and looked at the girl again.

"Allegra," he breathed. "What in God's name are you doing here?"

"Much has happened," was all she replied.

Merlin grabber her arm and pulled her inside. He slammed the door behind her. But, before he could ask his next question, Gaius spoke.

"Merlin, who is this girl?"

Merlin took a deep breath. He looked at Allegra again. She had changed so much since he had left. She had grown at least three inches and her faced had grown more beautiful.

"Gaius, this is Allegra. She's my sister."

Gaius opened his eyes in shock. He stared at Allegra. He then looked back to Merlin. "You never told me you had a sister," he whispered.

"She's my half-sister," he protested.

"Half-sister? You have a half-sister?" Gaius hissed.

"Um, yeah," Merlin mumbled.

Please review!!!