The TARDIS' attention has already returned to more pressing matters, but the creature isn't giving up its pursuit. It prowls the corridor on the boy's trail and reaches the library only shortly after him, resting its good hand on the door frame and staring at him out of glowing red eyes. There are precious things in this room, secrets that must be protected, so it leaps forward and knocks him down with its weight, already grabbing for his face, his throat.

Somewhere close by, dimensional stabilizers for the area malfunction and the library tilts, sending books and shelves and furniture tumbling chaotically. A heavy chair is thrown against one of the wall-mounted shelves and dislodges it curiously, pushes it in - a secret tunnel, though it looks more like a blood vessel, organic and diffusely lit. The creature is knocked off Johnny's back by the shifting gravity but otherwise hardly deterred, wailing and scrambling for purchase to reach him again.