• 8:00 a.m.: Skyline Elementary opens for the science fair. Terri and Kyron Horman arrive shortly after.
• 8:15 a.m.: Skyline PTA President Gina Zimmerman sees Kyron with his stepmother, Terri, in front of his exhibit.
• 8:45 a.m.: Terri Horman leaves the school after watching Kyron walk toward his classroom.
• 9:00 a.m.: Another student reports seeing Kyron near the south entrance of the school.
• 10:00 a.m.: Class begins; Kyron’s homeroom teacher, Kristina Porter, reports him absent.
• 1:21 p.m.: Terri posts a picture of Kyron and his project on her Facebook page.
• 3:30 p.m.: Terri and Kyron’s father, Kaine Horman, go to meet the school bus and discover Kyron has been absent all day.
• 3:56 p.m.: School secretary Susan Hall calls 9-1-1 to report Kyron missing.
• 3:59 p.m: The Portland Police Bureau and Multnomah County Sheriff’s Office are dispatched.
• 4:33 p.m. – Portland Police Bureau officers and Multnomah County Sheriff’s Office deputies arrive at Skyline Elementary School and Kyron’s home. MCSO and Portland Police Bureau began checking the home, school and surrounding area for Kyron
• 5:30 p.m.: A broadcast is sent to parents in Portland Public Schools: “Kyron Horman did not arrive at home today.”
• 7:00 p.m.: The Multnomah County Sheriff’s Office Search and Rescue are activated to assist in the search. Detective Sgt. Lee Gosson alerts Sgt. Travis Gullberg to begin a formal missing persons search for Kyron.
• 7:15 p.m.: The Public Information Officer begins returning calls from media and arranges to meet them at the school.
• 8:09 p.m.: The first search teams arrive at Skyline School.
• 8:15 p.m.: Lt. Mary Lindstrand arrives and begins emailing Kyron’s photo to local media.
• 8:15 p.m. – The MCSO Public Information Officer meets with media at the school.
• 8:30: Sheriff Dan Staton notifies the FBI.
• 8:25 p.m.: Deputy Mark Herron, the search-and-rescue coordinator, arrives.
• 9:48 p.m.: Mountain Wave Search and Rescue group arrives at the school.
• 10:40 p.m.: Officers complete a search of Skyline School and the Horman residence.
• 10:44 p.m.: A tipster calls 9-1-1 suggesting officers check a nearby train tunnel where kids sometimes play.

• 5:00 a.m.: Pacific Northwest Search and Rescue is called. Upon arrival, 60-70 people are already involved.
• 9:08 a.m.: Associated Press receives its first official notification that Kyron is missing.
• 12:00 p.m.: A sheriff’s spokesman states the search is still a missing-person case, not a criminal investigation. Around this time, Portland Public Schools alerts staff and parents who were at the school to attend debriefings on Sunday.
• 4:00 & 8:00 p.m.: News conferences are held; the FBI and National Guard have joined the effort. Search crews complete an immediate grid search around the school.

• 8:58 a.m.: Terri posts on Facebook about ordering 1,000 missing-person flyers.
• The FBI announces they have brought in a profiler from Quantico, Virginia.
• 9:48 a.m.: Students and parents return to Skyline School for interviews with detectives.
• 12:10 p.m.: Kyron’s relatives distribute missing-person flyers with his description.
• 3:30 p.m.: Portland Public Schools Superintendent Carole Smith outlines steps to address security concerns.
• 9:00 p.m.: The sheriff escalates Kyron’s case to a missing endangered child but does not label it a kidnapping.

• Early morning: 18 certified search-and-rescue volunteers resume sweeping the area. Deputies canvass the neighborhood, noting license plates along Northwest Skyline Boulevard.
• 8:45 a.m.: Classes resume at Skyline with counselors available.
• That evening, Kelly Ramirez, Desiree Young’s sister, thanks the community for their support.

• Search and rescue crews continue their efforts.
• A reward fund is created and announced on Facebook.

• 11:00 a.m.: FBI spokeswoman states the family isn’t speaking to the media.
• 12:00 p.m.: Sheriff’s Capt. Mike Shults reads a statement from Kyron’s family, thanking the public and urging them to search their properties.
• 9:45 p.m.: Portland Mountain Rescue is called to join the search.
• Terri makes her Facebook wall private.

• Search and rescue crews continue their search.

• 10:00 a.m.: The search expands to Sauvie Island.
• 1:00 p.m.: Kyron’s family holds their first news conference, expressing gratitude and urging Kyron to come home.

• Search efforts continue; the sheriff’s office requests the public to hold off on donations due to surplus.

• 12:00 p.m.: The massive search ends; the case shifts to a criminal investigation. Over 1,300 people participated, making it one of the largest searches in state history.
• The sheriff’s office seeks video footage of traffic near the school.
• 100 T-shirts with Kyron’s missing poster are distributed for free.

• Divers search areas around Sauvie Island, wading in waist-high water off the Multnomah Channel.

• Early morning: A photo of glasses like Kyron’s is released.
• Around noon: Dive teams search a pond near the Horman home.
• 3:36 p.m.: A new photo of Kyron without glasses is released.
• 30 billboards with Kyron’s picture go up around the metro area, donated by Clear Channel.

• Social media rumors falsely claim Kyron’s body has been found.

• The sheriff’s office releases a flyer seeking information, including photos of Kyron, Terri, and a similar pickup truck. He asked for the public’s help in providing specific details about sightings of a white truck at these Fred Meyer locations:

22075 NW Imbrie Dr., just off Cornelius Pass Rd., in Hillsboro around 9 a.m. on June 4.

15995 SW Walker Rd. in Beaverton around 10 a.m. on June 4.

• 2:00 p.m.: Capt. Jason Gates confirms the family approved the flyer and dispels rumors.
• 8:30 p.m.: A friend reports Terri will undergo a second polygraph.

• Authorities collect flyers from parents at Skyline.

• Kyron’s mother, Desiree Young, writes an open letter to her son.

• A “Wall of Hope” is created outside Skyline Elementary as a tribute.

• Kyron’s family released home movies and 200 new photos.

• Desiree Young and Kaine Horman appear on network morning shows to share Kyron’s story.

• Two 9-1-1 calls are made from the Horman residence regarding a “threat” and a “custody” issue.
• Kaine moves out, taking their 19-month-old daughter, Kiara.

• People magazine features Kyron’s story.
• Terri’s father expresses uncertainty about her potential arrest.
• 5:52 p.m.: Kaine, Desiree, and Tony Young release a statement excluding Terri’s name.
• Media reports Terri has been served with a restraining order and divorce papers.

• A judge seals the restraining order against Terri Horman.

• Terri returns home with attorney Stephen Houze amidst media attention.

• The investigation has cost the county approximately $300,000.
• Sheriff Staton discusses resource concerns.

• Reports surface that Terri allegedly offered a landscaper money to kill Kaine Horman months prior.

• Kaine asks a judge to order Terri to move out of their house.
• The petition supporting the restraining order is released.

• Terri agrees not to contest the restraining order or being forced out.
• Kaine accuses Terri of violating the restraining order and other misconduct.

• Terri vacates the house per an out-of-court settlement and moves to Roseburg.

• Kaine and Kiara return home.

• An article explores why Kyron’s case has gained significant attention.

• Law enforcement focuses on DeDe Spicher, searching her home and interviewing associates.

• County commissioners approve additional funding for the investigation.

• Reports indicate DeDe Spicher left her work site abruptly on June 4 and was unreachable.

• Kaine files a motion for Terri to disclose the source of $350,000 paid to her attorney.
• DeDe Spicher testifies before a grand jury.
• “Dateline NBC” airs a program on Kyron’s disappearance.

• The reward for information increases to $50,000.

• Terri’s lawyer files a motion to delay divorce proceedings due to media scrutiny.

• Witnesses, including Kyron’s parents and Terri’s friends, testify before a grand jury.

• Searchers focus on the Old Germantown Road loop near where DeDe Spicher was working.

• Investigators continue searching along Northwest Old Germantown Road.

• Media obtain personal emails from Terri detailing the day Kyron disappeared.

• Investigators seek details about sightings of the Horman truck, releasing staged photos.
• Kaine’s lawyer objects to delaying divorce proceedings.

• DeDe Spicher tells People magazine she did not leave her work site on June 4.

• Kaine and Desiree discuss changes in Terri’s behavior since 2005.

• Terri appears in court; her lawyer argues she cannot proceed due to being a suspect.

• Kaine and volunteers re-erect the Wall of Hope at a new location.

• Kaine drops his motion to find Terri in contempt.

• Kyron’s parents celebrate his 8th birthday with cake and cards.

• The sheriff’s office announces scaling down the investigation due to costs over $1 million.

• Clear Channel begins removing Kyron Horman billboards.

• Search teams return to Sauvie Island.

• A court hearing delays the divorce proceedings until January 2011.

• 180 searchers return to Sauvie Island.

• Terri petitions for visitation rights with Kiara.

• Additional funding is granted for the investigation.

• Kaine files an objection to Terri’s visitation request, seeking a mental health evaluation.

• Kaine submits an affidavit calling Terri “emotionally disturbed.”

• Terri withdraws her motion for parenting time with Kiara.

• Dive teams search Sauvie Island again.

• Desiree accuses Terri of hating Kyron on “Today Show”; criticizes Kaine.
• Kaine responds, denying knowledge of any threats.

• Skyline School principal emails a flyer to parents at the sheriff’s request.

• Authorities search forested hills west of Sauvie Island but find nothing.

• The FBI dedicates up to six agents to assist with the investigation.

• Desiree releases a valentine to Kyron expressing her longing.

• Searchers return to previously unsearched areas.

• The Horman divorce hearing is delayed until June 30.

• Sheriff Staton announces the formal task force will disband on July 1.

• Desiree withdraws her civil suit against Terri to avoid impeding the investigation.

• A Multnomah County Circuit Court judge referred to Terri as a “prime suspect” in the case.
• According to the sheriff’s office, DNA from Kyron’s family and his own toothbrush have been submitted and are actively searched against the national DNA database. Dental records and X-rays have also been uploaded to the National Missing and Unidentified Persons system for comparison to unidentified remains throughout the U.S.

• Desiree and Kaine air their differences on “The Dr. Phil Show.”

• A judge finalizes Kaine and Terri’s divorce.

• Desiree files a civil lawsuit against Terri for custodial interference.

• Desiree drops the lawsuit, citing Terri’s silence.

• Kaine is awarded custody of Kiara; Terri is allowed supervised visits.

• A judge denies Terri’s request for a name change due to the ongoing investigation.

• Terri speaks publicly about Kyron during her name-change hearing.

• Terri files another petition to change her name.

• Terri withdraws her name-change petition after public opposition.

• Reports indicate Terri took a job as a caregiver under her maiden name.

• Terri leaves her job due to public attention.

• The sheriff’s office announces a $50,000 reward as the fifth anniversary approaches.

• Kaine expresses a desire for resolution and for people not to forget Kyron.

• Terri’s roommate reports a stolen gun; Terri is implicated.

• Terri tells Dr. Phil she believes Kyron was kidnapped by a man in a white pickup.

• An age-progressed photo of Kyron at 14 is released.

• Terri marries Jose De Jesus Vazquez Martinez in Nevada.

• On the ninth anniversary, Desiree announces the search area has been narrowed to less than 100 acres.

• Rebecca Morris releases a book titled “Boy Missing: The Search for Kyron Horman.”

• “Little Boy Lost: An ID Mystery” aired on Investigation Discovery.

• On the 10th anniversary, Sheriff Mike Reese reaffirms his dedication to the investigation and encourages public assistance.

• Multnomah County Sheriff’s Office (MCSO) and law enforcement partners are reaffirming their commitment to finding Kyron and pursuing justice. Over the past year, investigators have undertaken a significant effort to modernize and review the case through a renewed, collaborative approach. The MCSO and Gresham Police detectives are working to digitize and reorganize the entire case. This means scanning and documenting thousands of pages of reports, photos and evidence. When the case is digitized, the file will be reexamined by the Federal Bureau of Investigation (FBI) Behavioral Analysis Unit (BAU). The BAU is a unit within the National Center for the Analysis of Violent Crime that uses behavioral analysis to assist in criminal investigations, by analyzing statements, narratives and evidence, performing psychological and behavioral analysis and offering investigative recommendations based on patterns from similar historic and current cases nationwide. Source