"Or what is more likely," interrupted Tarling, "than that he would put the blame for the robberies upon the girl and trust to her paying a price to Thornton Lyne to escape punishment?"
"Right again. I'll accept that possibility," said Whiteside. "Milburgh's plan is to get a private interview, under exceptionally favourable circumstances, with Thornton Lyne. He wires to that gentleman to meet him at Miss Rider's flat, relying upon the magic of the name."
"And Thornton Lyne comes in list slippers," said Tarling sarcastically. "That doesn't wash, Whiteside."
"No, it doesn't," admitted the other. "But I'm getting at the broad aspects of the case. Lyne comes. He is met by Milburgh, who plays his trump card of confession and endeavours to switch the young man on to the solution which Milburgh had prepared. Lyne refuses, there is a row, and is desperation Milburgh shoots Thornton Lyne."
Tarling shook his head. He mused a while, then:
The door opened and a police officer came in.
"Here are the particulars you want," he said and handed Whiteside a typewritten sheet of paper.
"What is this?" said Whiteside when the man had gone. "Oh, here is our old friend, Sam Stay. A police description." He read on: "Height five foot four, sallow complexion ... wearing a grey suit and underclothing bearing the markings of the County Asylum.... Hullo!"
"This is remarkable," said Whiteside, and read
"When the patient escaped, he had bare feet. He takes a very small size in shoes, probably four or five. A kitchen knife is missing and the patient may be armed. Boot-makers should be warned...."
"Bare feet!" Tarling rose from the table with a frown on his face. "Sam Stay hated Odette Rider."
"Now, do you see who killed Mrs. Rider?" asked Tarling. "She was killed by one who saw Odette Rider go into the house, and did not see her come out; who went in after her to avenge, as he thought, his dead patron. He killed this unhappy woman--the initials on the knife, M.C.A., stand for Middlesex County Asylum, and he brought the knife with him--and discovered his mistake; then, having searched for a pair of shoes to cover his bleeding feet, and having failed to get into the house by any other way, made a circuit of the building, looking for Odette Rider and seeking an entrance at every window."