LOS ANGELES – "You did it, Michelle." Comedian Patton Oswalt spoke these words proudly and affectionately to his deceased wife on Wednesday in an Instagram video.
Finally, in the case of the Golden State killer, an arrest was made that had shaped Michelle McNamara on her personal mission. He was responsible for at least 12 murders and 50 rapes throughout California during the 1970s and 1980s.
McNamara died in April 2016 at the age of 46 years asleep. She was in the middle of the hunt for the murderer and her book. "I'll be left in the dark: The obsessive search of a woman for the Golden State killer."
Oswalt helped to finish the book after McNamara's death. It became a # 1
On Wednesday, the authorities announced that a DNA match had led them to arrest the Golden State killer, whom they identified as Joseph James DeAngelo, a 72-year-old former police officer.
"This is crazy," Oswalt said in another Instagram video when he learned of the arrest for the first time. "Perfect disengagement in action."
Oswalt appeared on Late Thursday in "Late Night with Seth Myers" and said the news of the arrest was like "a start to this whole other chapter."
"Now it feels like this thing she so desperately wanted is done," he said.
Sacramento County Sheriff's Department
He and McNamara's fans confirmed the detective's years of tedious work in clarifying the crime and were disappointed when the police did not give her credit at a press conference.
Asked specifically whether McNamara's book helped solve the case, Sheriff Scott Jones of Sacramento County said his office had "literally gotten this question from around the world in the last 24 hours."
"And the answer is no," he said. "The interest in tips has been preserved, but otherwise no information was extracted from this book that directly led to the arrest."
On Instagram, Oswalt said, "Although the police will never say it, your book helped close that thing."
McNamara "did not care about shining on himself," Oswalt wrote on Twitter and compared them with Frances McDormand's inconspicuous Detective Marge Gunderson in the 1996 film "Fargo."  "She kept coming up to him," Oswalt said.
"48 Hours" examined the case in the episode "The Golden State Killer." The show featured Oswalt's first in-depth television interview on McNamara's coverage of the case.
DeAngelo's name was not on McNamara's radar screen, said Billy Jensen, a revelatory journalist who wrote the book.
But McNamara's idea for the name "Golden State Killer", her coverage of the case in "Los Angeles Magazine" and a blog, the shocking news of her death, and the book illuminated the decades-old crime in the limelight he said  "Just the fact that they said the book did not help, but then said:" We have the Golden State killer, "it's a bit contradictory," said Jensen.
Two hours before news broke of the arrest, Oswalt and all of McNamara's employees were together with their family for the first time at an event outside their hometown of Chicago. It was also the first day of filming an HBO documentary series based on the book.
"I'm a rational man, but I can not help but this seems to be a coincidence," wrote employee Paul Haynes on Twitter.  Oswalt said he ended the event with a thought to the killer: "He has no time left."
McNamara wrote in her book that she was interested in being a 14-year-old girl for the murder of a neighbor left unsolved. She also wrote about why and how the Golden State killer case later became her obsession.
"The catch for me was that the case seemed solvable," she wrote. "Curiosity turned into a throating hunger, I was hunting."
When the assailant committed crimes throughout the country, the authorities called him by various names. He was named the East Area Rapist after his start in Northern California, the Original Night Stalker after a series of assassinations in Southern California, and the Diamond Knot Killer for attacking two of his victims with a sophisticated attachment method.
When DeAngelo was arrested, Sheriff Jones said officers had simply waited for him to go outside his home.
"That surprised him a lot," Jones said. "It looked as if he had searched his mind to carry out a specific plan he might have in mind … but he was not given the opportunity, it happened almost instantaneously and he was arrested without incident."
The fans of Oswalt and McNamara could not help noting the parallels to DeAngelo's arrest and the end of her book with a message directly to the Golden State killer.
"The doorbell rings," she wrote. You'll be quiet for ever and I'll be in the dark You once threatened a victim Open the door Show us your face Go into the light. "