The professor’s voice echoed dully around the room, sweeping tunelessly over the heads of 70 tired and uninterested students. The sky outside was grey and miserable, mirroring the mood of the room, bar for one girl – Jo. She was sat in the middle of a row, halfway up the tiered seating, and was radiating her good mood. Her long brown hair, fell in curls over her shoulders, and seemed to shine under the incandescent lights...