“What I said was,” remarked the sergeant with professional reticence, “that everyone was under suspicion.”
Mr. Farr met the imperturbable blue eye of his witness with an expression in which irritation and discretion were struggling for supremacy. Discretion triumphed. “Did you discover any tracks on the cottage road?”
“I surely did.”
“Footprints?”
“No; there were some prints, but they were too cut up and blurred to make much out of. What I found were tire tracks.”
“More than one set?”
“There were traces of at least four sets, two of them made by the same car.”
“All equally distinct?”
“No, they varied considerably. The ground in the cottage road is of a distinctly clayey character, which under the proper conditions would act almost as a cast.”
“What would be a proper condition?”