March 8, 1986: The family of Erik Sparre's ex-wife comes forward with a tape of a man saying he killed the Swains. They say the man is Sparre.
Aug. 1, 1988: An anonymous tipster claims Dennis Perry was angry with Harold Swain.
Nov. 2, 1988: "Unsolved Mysteries" segment on case episode airs.
Summer 1992: Camden County Chief Sheriff's Deputy Butch Kennedy, the agency's longtime lead investigator on the case, leaves the sheriff's office.
July 1, 1998: Dale Bundy is hired by the sheriff's office to work the Swain case.
July 23, 1998: Bundy meets Jane Beaver, who tells him Perry revealed to her weeks before the murders that he planned to kill Harold Swain.
Jan. 13, 2000: Perry is indicted and arrested.
Feb. 14, 2003: Perry is convicted after a four-day trial and given two life sentences.
Spring 2018: The "Undisclosed" podcast begins investigating the case, along with the Georgia Innocence Project, which has been representing Perry for years.
June 10, 2019: Perry's attorneys file a petition arguing for his release, citing new evidence uncovered during production of "Undisclosed."
July 2019: AJC reporter Joshua Sharpe begins looking into the case.
Feb. 24, 2020: After learning of problems Sharpe found with Sparre's alibi, a Georgia Innocence Project investigator obtains hair samples from Sparre's mother for a DNA test to see if Sparre could be linked to hairs found in the hinge of a pair of glasses found near the bodies.
March 24, 2020: The lab results come back, linking Sparre to the hairs from the scene.
July 13, 2020: Hearing on Perry’s motion for a new trial.
July 17, 2020: Perry’s convictions are overturned.
July 23, 2020: Perry is granted a signature bond and released from prison.
Aug. 4, 2020: GBI agents search the property of Sparre.
Nov. 4, 2020: Prosecutor Jackie Johnson loses election in the Brunswick Judicial District. She faced criticism for pushing to keep Perry in prison despite evidence he was innocent.
Nov. 18, 2020: GBI exhumes body of Harold Swain to search for DNA the killer may have left on his person.