“Quite. Because, you see, Betty and I were expecting her, and we kept looking round in case we saw her, so that we should all be playing with our backs to her.”

“You and Miss Calladine were playing together?”

“I say, however do you know that?”

“Brilliant deductive reasoning. Well, then you suddenly saw her?”

“Yes, she walked across that side of the lawn.” He indicated the opposite side, nearer to the house.

“She couldn’t have been hiding in the ditch? Do you call it the moat, by the way?”

“Mark does. We don’t among ourselves. No, she couldn’t. Betty and I were here before the others, and walked round a bit. We should have seen her.”

“Then she must have been hiding in the shed. Or do you call it the summerhouse?”