“How many were in it?”

“About a dozen, all told,” said Kenneth. “We shared a box.”

“And you naturally danced with other members of the party besides Miss Rivers?”

“Naturally,” concurred Kenneth.

“But we always met in the box again after every dance,” Leslie struck in. “I don't think we lost sight of each other for more than five minutes at a time the whole night, did we, Kenneth?”

“No,” said Kenneth slowly. “Probably not.”

Giles thought, with a sinking heart: That's a lie. And Kenneth isn't doing it well.

“You didn't leave the Albert Hall during the course of the dance, Mr Vereker?”

“No.”

There was a pause. Hannasyde put his hand in his pocket, and drew out the meerschaum pipe. “Have you ever seen that before?” he asked.