It must've been Mr Wilson:
'A Benaroon Drive resident said his wife drove out of the street, which William's grandmother no longer lives in, one minute before William disappeared.
It was 26 or 28 minutes to 11am, he remembered with minute detail.
"She never saw a car or noticed anything strange," he said.
The man spent the next day with a pool net in hand searching through a dam and waterholes, anxious about what he might find.'
http://www.smh.com.au/nsw/william-t...-false-hope-12-months-on-20150903-gjenjz.html
'
LYING IN WAIT
THE person who abducted toddler William Tyrell may have laid in wait until the nearby houses were empty before striking, a neighbour believes.
Judy Wilson, whose property adjoins William’s grandmother’s backyard, believes it may be more than just coincidence that the child disappeared only after she went to run errands in town.
She said someone could have been waiting for her to leave, potentially aware that the neighbour on the other side was also away.
“If someone was watching the house, they would’ve seen me leave and would’ve known the other neighbour was away, she said.'
'Mrs Wilson also told how William’s father frantically searched her yard over and over again into the night.
“He was just walking around crying. He kept asking me if there was anywhere else he could’ve been hiding here,” Mrs Wilson said. “He just looked devastated.”
Mrs Wilson said she heard the two children playing in the neighbouring yard before she left to run errands in the township about 90 minutes before William disappeared, just metre’s from her home.'
http://www.dailytelegraph.com.au/ne...l/news-story/46b94ee67cf7e7c2cb4ba6a276388da8