This is an approximate timeline from Bosco, neighbor Sharon Bychowski and blog entries on the findstacypeterson.com Web site filed by her sister, Cassandra Cales:
9:40 a.m.: Bychowski, on the way to the grocery store, saw the Petersons' two vehicles in their driveway.
10:15 a.m.: A friend called Stacy Peterson to talk about meeting to paint that day. She told him she was still in bed, but they made plans to meet. The pair hung up around 10:25 a.m.
11 a.m.: Drew Peterson said he woke up and found Stacy Peterson gone. He told the Tribune and others she had left to paint a home in Yorkville.
11:55 a.m.: Bychowski returned from the store and saw only the Petersons' GMC Yukon Denali in the driveway. She said she called the house to let them know she brought back suckers for the kids and Drew Peterson got on the phone after she asked for Stacy Peterson.
"He said, 'She went to her grandpa's to do errands for him.' Grandpa is on the South Side of Chicago," Bychowski said. "I said I had these suckers for the kids, and he said, 'Let me get the kids some lunch and I'll be over.'"
1 p.m.: Drew Peterson came over with his children and told Bychowski he had to run an errand, she said. He said he would be back in 15 minutes, and he was, Bychowski said.
1:48 p.m.: Bychowski called Stacy Peterson's cell phone, and it went straight to voice mail. Meanwhile, Cales tried reaching her all day.
8 p.m.: Drew Peterson told Bychowski he had left a message for Stacy Peterson telling her he was worried about her.
9 p.m.: Drew Peterson says Stacy Peterson called him and told him she was leaving him for another man.
11 p.m.: Cales went to the Petersons' home and said neither car was in the driveway. She knocked on the door, and one of the Petersons' children told her Stacy Peterson and Drew Peterson had a big fight that morning and that neither of them was there.
11:26 p.m.: Cales called Bosco, who told her to call Drew Peterson. Cales did call Drew Peterson. Bosco said, "She said [when Drew Peterson answered] she heard the keys in the background. He's a little flustered, out of breath, while putting the keys in the ignition. And she said, 'Where are you?' And he said, 'I'm at home.' And he said he'd been out looking for her sister."
Cales went to the Downers Grove Police Department, which sent her to Bolingbrook police.
2:30 a.m.: Cales and her friend Bruce Zidarich drove by the Petersons' home and said both cars were in the driveway, so Zidarich called Drew Peterson. "Bruce said, 'Where's Stacy?'" Bosco said. 'And Drew said, 'She's left me.' And he said, 'The car was at the whatchamacallit.' And Bruce asked, 'What's the whatchamacallit?' and Drew said, 'Wait a second, let me get my head on straight.' Then he said, 'She left the car at the airport and she took $25,000,' and was going to either Jamaica or Bahamas."
4 a.m.: Cales reported Stacy Peterson missing to Illinois State Police.
http://www.chicagotribune.com/news/local/chi-peterson_29nov29,0,2276631.story