Over the next two weeks, Walter went to work quietly and efficiently — the way he had always done everything. He made several trips to the hardware store and the garden centre. He spent an afternoon with Mrs. Chen, who listened to his plan, raised her eyebrows, and then laughed so hard she had to sit down. “Walter,” she said, wiping her eyes, “you are a genius.” He felt that was slightly strong, but he appreciated the sentiment. She agreed to her part without hesitation. She even added a suggestion of her own that he admitted was better than his original idea.
He also spoke to young Danny, the twelve-year-old from number 9, who mowed lawns for pocket money and was good with a camera. Danny was sworn to secrecy and given strict instructions. Walter paid him fairly and shook his hand like a business deal. Then Walter waited. Every morning, he came out and checked his lawn, and every morning it was the same story — same three dogs, same three unaware owners. He took notes. He timed their routines. He was ready. The Saturday he had chosen was only four days away now.