July 11: Two slain women are discovered on the Pinnacle Lake Trail. The sheriff’s office doesn’t immediately release the cause of death.
July 12: The sheriff’s office says the women were victims of “homicidal violence.”
July 13: Family and friends of Mary Cooper, 56, and Susanna Stodden, 27, begin to publicly mourn the mother-daughter pair. Flowers and letters are left in memorial on the steps of the Seattle school where Cooper was the librarian.
July 14: The sheriff’s office says the two women were shot and rules out murder-suicide. The road to Pinnacle Lake is closed. Meanwhile, school principal John Miner remembers Cooper as a teacher “beyond all others.” Husband David Stodden tells reporters how he took his surviving daughters for a hike near the killing scene. “It felt really important to go where we were afraid to go,” Elisa Stodden said.
July 18: Authorities say the trail to Pinnacle Lake will remain closed indefinitely. More than 100 tips have been reported.
July 19: David Stodden talks to reporters to encourage people with information to talk with investigators. He says the women were not robbed. The sheriff’s office says officers are working overtime on the case.
July 20: Hundreds of people join surviving family members for a candle-light memorial walk around Seattle’s Green Lake, near the family home.
July 21: Snohomish County Sheriff Rick Bart says investigators are working around the clock to find whoever is responsible. The Pinnacle Lake Trail reopens.
July 23: About 1,500 people remember the two women at a memorial service in Seattle.
July 27: The sheriff’s office says the investigation has led to many people they believe may have information important to the case, but it stops short of calling them suspects. The office reports that investigators are “enthusiastic about the information” they have received.
Aug. 11: One month after the killings, the sheriff’s office says investigators have received 265 tips.
Sept. 15: Family and friends of the slain women raise the reward for information from $6,000 to $26,000.
Oct. 12: Sheriff Rick Bart says detectives have shared information with FBI profilers and with agencies outside of Snohomish County, including one agency outside the U.S. Detectives say more than 300 tips have been called in.
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