just some doctor/clara: [22/∞]
A long time ago, there was a student at the Academy. He got in here, disappeared for four days. Showed up in a completely different part of the city. Said the Sliders talked to him, they showed him the secret passage out. And we just need the code. What, and the kid told you the secret? Ah, no, he didn't tell anyone anything. He went completely mad, never right in the head again. So they say.