Lenora looked away.
"I don't like it," she said to Quest simply.
Suddenly Laura leaned forward.
"Look at the Professor," she whispered.
They all turned their heads.

A queer change seemed to have come into the Professor's face.

His teeth were gleaming between his parted lips, his head was a little thrust forward, his eyes were filled with a strange, hard light.

He was a transformed being, unrecognisable, perturbing.

Even while they watched, the girl floated close to where he sat and leaned towards him with a queer, mocking smile.