Here's a quick look at some of the major dates associated with the disappearance of Stacy Peterson, the Bolingbrook mother missing since Oct. 28, and the investigation into the 2004 death of Kathleen Savio, Drew Peterson's third wife.

2001 - Bolingbrook police sergeant Drew Peterson, 47, begins dating 17-year-old Stacy Cales. The romance continues despite Peterson’s marriage to Kathleen (Savio) Peterson, his third wife.

June 2003 - Drew Peterson and Kathleen Savio are divorced; issues remain unresolved with regard to the distribution of marital assets.

July 2003 - Drew Peterson and Stacy Cales marry; Stacy is pregnant; Savio remains in the home she shared with Peterson at 392 Pheasant Chase Drive. The Petersons move into a home at 6 Pheasant Chase Court, a few hundred yards from Savio’s home.

March 1, 2004 - Savio’s body is found in an empty bathtub in her home. Illinois State Police are called in to investigate her death. Final financial arrangements regarding the division of martial assets between Peterson and Savio, 40, are still unresolved. Savio’s family members said the issue was supposed to come up again in about a month.

March 20, 2004 - Dr. Bryan Mitchell, with the Will County Coroner’s Office, releases an autopsy report, saying the cause of Savio’s death was accidental drowning. Mitchell notes that Savio’s hair was soaked with blood from an inch-long laceration on her scalp, her tongue was partially clenched between her teeth, and she had several small abrasions on her body.
  
May 2004 - A coroner’s jury rules Savio’s death an accident. No charges were filed in the case.

Oct. 26, 2007 - Stacy Peterson allegedly tells Drew Peterson she wants a divorce, according to her family.

Oct. 27
11:30 p.m. - Cassandra Cales leaves her sister Stacy Peterson’s home with plans to meet at 10 a.m. the next morning to help paint a house

Oct. 28
9:40 a.m. - Peterson neighbor Sharon Bychowski leaves her home to go to the grocery store and notes seeing both of the Peterson’s vehicle in their driveway.

10:15 a.m. - A friend calls Stacy Peterson about painting the house that day. Peterson, still in bed, says she will meet to paint the house later.

11:15 a.m. - Bychowski returns from the grocery store and says she saw only one of the vehicles in Peterson’s driveway. Bychowski calls next door to see if the Peterson children want to come over for suckers. She asks for Stacy when one of the children answers the phone and Drew Peterson tells her his wife went to visit her grandfather.

1 p.m. Drew Peterson brings the children over to Bychowski’s home and tells her he has an errand to run. He returns in about 15 minutes.

9 p.m. Drew Peterson says Stacy called him to tell him she was leaving him for another man.

11 p.m. Cales goes to Peterson’s home and does not see either vehicle in the driveway. One of Peterson’s children opens the door and tells Cales that he is home alone with his three siblings and that Stacy and Drew had gotten into a fight. He said Stacy Peterson had left the house and Drew went out to look for her.

11:15 p.m. - Cales calls Drew Peterson and asks for Stacy. Cales hears shuffling and keys going into the ignition. Peterson tells Cales he’s at home and had been out looking for his wife.

Oct. 29
1 a.m. - Cales goes to the Bolingbrook Police Department to file a missing persons report.
 
2:30 a.m. - Cales returns to Peterson’s home and sees both cars in the driveway. Cales’ friend calls Drew Peterson and asks him where Stacy is at. Peterson said his wife left him, took money and left her car at Clow International Airport.

4 a.m. - Cales files a missing persons report with Illinois State Police.

Later - Illinois State Police interview Drew Peterson regarding his wife’s disappearance. They ask to look at both of his vehicles. He allows access to one but not the other. The massive search for any evidence of Stacy Peterson’s whereabouts begins.

Nov. 8 - Will County Coroner Patrick O’Neil states that he never agreed with a coroner’s jury that Kathleen Savio’s death was accidental.

Nov. 9 - A judge orders the exhumation of Savio’s body from Queen of Heaven Cemetery in Hillside. Officials, for the first time, label Drew Peterson a suspect in his Stacy Peterson’s disappearance. Will County State’s Attorney James Glasgow publicly states that crime scene evidence of Savio’s death appears to show her death may have been staged to look like an accident. Glasgow was not in office at the time of her death.

Nov. 12 - Drew Peterson hands in his letter of resignation to the Bolingbrook Police Department, just shy of his 30th anniversary with the department. The resignation is later accepted and Peterson retires. He will receive more than $72,000 annually in pension benefits.

Nov. 13 - Savio’s body is exhumed and a second autopsy is performed. The results are not expected to be made public.

Nov. 20 - Bolingbrook Police Department Chief Ray McGury says Peterson was a disgrace to the department and was under investigation for unspecified violations that occurred over about a year-long period while Peterson was still a sergeant. The internal investigation was discontinued when the village’s Police Board accepted Peterson’s resignation.

Nov. 28 - Volunteers searching for Stacy Peterson announce they are now looking for a blue container similar to the one described by a male relative of Drew Peterson’s. The relative had recently told police that Peterson asked him to come over to the house and help him lift a large blue rectangular container into Peterson’s vehicle. The relative believed the container may have had held the body of Stacy Peterson.

Dec. 10 - Planfield minister Rev. Neil Schori tells Fox’s Greta Van Susteren that Stacy Peterson told him her husband admitted to killing his ex-wife, Kathleen Savio.

Dec. 17 - A Will County judge denies part of Drew Peterson’s request to have property seized by police during searches returned to him. The judge allows Peterson to regain possession of music CDs, an iPod, and other items but says other property, such as two vehicles and 11 guns must remain with the state for now.