Doctor Who And the Phantom's Song

Breadcrumbs

The trail led the Doctor into a small chapel. And then they stopped at one of the far walls, no not at. In. A footprint, cut in half by the wall, leading out if the wall. He recalled what he knew about the phantom of the opera, capes, masks, good music and... secret passageways, of course, so simple. He pulled out the sonic screwdriver and pointed it at the wall. It slid away with a satisfactory hiss and opened onto a dark passageway behind. "Well," he muttered to himself, "I have nothing better to do." And with that he slipped into the passageway, the wall sealing up behind him...

Christine looked out to the audience. There were hundreds, maybe even thousands of people watching, waiting, but all she cared about was seeing one person, and there, a flash of shadow behind a pillar. A smile broke out on her face, then she caught sight of someone else, sitting in one of the ornately bedecked boxes. Another familiar face, yet one she had not seen in so many years.
But she had little time for surprise as she was suddenly shoed out onto the stage, her elegant white ball gown glittering in the bright stage light.

The Doctor walked down the seemingly endless passage, he had no idea how long he had been down there, a while definitely. He heard the sound of what seemed to be a wave, and decided that it was applause, the show was over. Shame really, he wouldn't have minded watching that. The only light was produced by the eerie glow of the sonic screwdriver. Suddenly the passage opened out into a huge cavern.
Inside there was a strange array of items, a large steampunk looking organ, a violin on a table, masks, a music box, rope, all sorts of oddities. And there were other things too, a small bed, bars over a pipe that could have served as an escape route, this wasn't a room... it was a prison.
A silky growl came from the shadows behind, "what are you doing here?"...