"Right now Mr Brown, this is just an informal interview, no-one is being accused or charged. Please tell me what happened from your point of view" Inspector Guthrie opened, as he started the recorder.
"Ah, OK. Um, well." Brown stuttered and seemed lost.
"Why don't you start with what you were all doing."
"Yes, yes, of course. I am the principal of a small travelling group of actors. We specialise in an almost lost form of play - the Harleqinade. It is a very old form of pantomime - it originates in Italy - but there is no script as such, so no two performances are ever the same."
The inspector nodded, and gestured for Brown to continue.
"We were performing in the city's amphitheatre - much as the performers would have centuries ago. We have a busking permit, so we could gather change from the public. Anyway, there are - were - six of us in the troupe. We all have parts we specialise in. I, being the oldest, play Pantaloon, the father of Colombine, who is played by my daughter Danielle."
"That's Danielle Brown, the missing person?"
Mr Brown looked startled at the interruption "Ah, yes, yes. Danni is who has gone missing."
"Carry on."
"All six of us were on stage - Michael Anders was playing Harlequin, who is chasing Colombine, John Johns was playing Clown, my servant, and Peter Kings was playing Perriot, my other servant who is pining after Colombine."
"You said all six of you. Who was the sixth?"
Brown looked at the inspector oddly. "Six of us? There has only ever been five of us in the troupe."
"Hmm.. Go on."
"Well, we were reaching a climax where Harlequin steals away Colombine and hides her away from Pantaloon, when we looked around and could not see Danni anywhere."
"And then."
"Well, we broke from the mummer play - where none of us speak - and asked the audience, who were no help at all, because all they did was recite the old pantomime standby of 'Behind you!' Naturally there was no-one there."
"I see," the inspector consulted his notes, "and then?"
"Well, the audience led us a merry chase, right up to one of the auditorium pillars. Then we called the police."
"Going back, I have several dozen statements from audience members that there were six people on stage."
"Yes, that's right."
"Who was the sixth?"
"Sixth? There are only five of us in the troupe, as I said."
"And the fact that the audience members all said that the sixth performer led Ms Brown to a pillar six inches across, and did not emerge from the other side?"
"Absolute balderdash."
The inspector looked again at his notes, reading the description of the mystery person - who had been dressed identically to Mr Anders.
He felt a shiver go down his spine. It was going to be a long night, and he feared that Ms Danielle Brown was never going to be found.