Gaius was talking to Arthur and Gwen about the angels when the Doctor burst in.
"Ah! Gaius, I presume?" he didn't give Gaius a chance to reply. "I'm the Doctor. And I can tell you everything you need to know about the Weeping Angels."
"Are they magical?" Arthur asked quickly. The Doctor started laughing.
"Are they magical!" he looked at the three blank faces before him. "Oh, you - you're serious?!"
"Yes we're serious!" Arthur growled.
"No, they're not magical," the Doctor said. "They're psychopaths."
"Psychopaths?" Arthur repeated.
"The kindest psychopaths in the universe," the Doctor continued, "They send you to a random time and let you live to death."
"Your friend Amy," Gwen said, "Told me that once they've touched you, you're dead."
"No," the Doctor corrected her, "She said it was over, by which she meant your old life - the chances of getting home are slim."
"What does this mean for us?" Gwen asked.
"Don't go out in a group less than three," the Doctor cautioned, "And if you are alone - don't turn your back, don't look away and DON'T BLINK!" he was pointing at them sternly. "Oh, and definitely don't go out after nightfall."
Amy was up early the next morning, so she decided to see what was happening in the courtyard. The Doctor was already down there.
"Where on Earth is Gwaine?" Arthur asked one of the knights.
"Probably got a hangover again," another knight laughed.
"Thank you for your input, Percival," Arthur growled.
"He's probably right, Sire," one of the other knights said, "He was at the tavern last night."
"Maybe you're right," Arthur sighed. "Leon, go and check, will you?" Leon nodded and jogged off to one of the nearby houses.
"Arthur," the Doctor called, "If Gwaine was drunk when he went home last night..."
"I try not to think about it, physician."
"Doctor," he growled.
"He's not there!" Leon yelled as he ran back. Arthur and the Doctor exchanged glances.
"Is he dead, physician?"
"DOCTOR!" he shouted. "No, he's not dead." Arthur sighed in relief. "Yet."
"Doctor!" came a yell. The Doctor turned and ran to where Merlin was staring at a very angry-looking angel.
"You blinked, didn't you?" Merlin nodded. "Gwaine has been touched."
"Is there any way to get him back?"
"The two statues need to be looking at each other," the Doctor explained. "But if we touch them, we get sent back in time.
"Move them without touching them?" Merlin pulled a face.
"Your forte, I think." Merlin sighed and leant against a wall. He looked at the statue for a moment, then cried out in shock.
"Doctor, my arm!" he yelled. "It's stone!" The Doctor rolled his eyes.
"No it isn't," he sighed.
"Yes it is, look!" Merlin looked up at the angel, which had once again moved.
"Don't make me bite your arm, too," he growled. Amy, who was standing next to Merlin, smiled.
"I'll do the honours." She bit into his arm and he yelped in pain.
"Told you so," the Doctor said smugly.
"Oh, I try to be modest," he mimicked. Amy laughed.
"Yep, that's the Doctor!" Merlin glanced over at the statue and yelled. He looked at the Doctor, to warn him. There was a sudden flash and the Doctor was gone, the Weeping Angel back to its crying position. "Doctor!" Amy yelled.
"No!" Merlin groaned. "No, this is all my fault!" he sat down on the steps with his head in his hands. Amy sat down beside him.
"No it's not," she said. "It was no-one's fault. It was an accident."
"But we need the Doctor," Merlin sniffed. "How can we do it without him?"
"Don't worry," Amy reassured him. "We'll be alright. Besides, the Doctor will be able to help - he's got his Timey-Wimey Detector." Merlin looked up. "It goes 'ding' when there's stuff. I'm not actually sure what it does, but he showed it to me once."
"So how do we stop the Weeping Angels?" Merlin sighed.
"We use your magic to get them to look at each other, and then we'll have the Doctor and Gwaine back in Camelot."
