"Michelle put a great big spotlight on him", Oswalt said of the killer, adding on Twitter that McNamara did not care about getting accolades for her work.
Two hours before news broke of the arrest, Oswalt and all of McNamara's collaborators were together for the first time promoting the book with her family at an event outside her hometown of Chicago.
The Catastrophe co-creator and star tweeted Thursday that he was on his way to a standup gig, one of a handful since the death of his 2-year-old son in January, and he offered his gratitude to Oswalt - who lost his wife suddenly in 2016 and has since made his return to the world of live comedy - for showing him the way. DeAngelo was arrested after police matched discarded DNA evidence from his Sacramento area home with genetic evidence from the crimes, Ventura County District Attorney Greg Totten said. She had been in the middle of her hunt for the killer and her book, "I'll Be Gone in the Dark: One Woman's Obsessive Search for the Golden State Killer". At the time of her death, she was working on her book about the Golden State Killer investigation and documenting some of her findings on her website True Crime Diary.
When Ms. McNamara died, the book was half finished.
Patton Oswalt was supposed to talk about his role on NBC's "A.P. Bio" on "Late Night with Seth Meyers" Wednesday, but given the news that earlier in the day police had arrested Joseph James DeAngelo, the suspect in the Golden State Killer case, much of the discussion focused on his late wife Michelle McNamara's book about the case. A documentary film crew was shooting footage for the HBO series as the speakers speculated on how long it would take for a suspect to be caught, not realizing it had already happened.
Actor Patton Oswalt is in "freak out" mode amid reports suggesting his late wife's final true crime book led police to a suspected serial killer in a California cold case. Instead, they credited her for have helping keep public interest and "tips coming in".
Oswalt, Haynes, and another researcher called Billy Jenkins, published I'll Be Gone In The Dark posthumously in February this year, two months before DeAngelo's arrest.
When DeAngelo was arrested, Sheriff Jones said officers simply waited for him to walk outside his house. "It happened nearly instantly and he was taken into custody without incident at all".
Oswalt also pointed out the irony that the arrest happened on DNA Day - the USA holiday celebrating advancements in DNA research - since McNamara firmly believed DNA evidence would play a key role in uncovering the killer's identity.
This is how it ends for you. Don't think I could do this if you hadn't shown it could be done. "Walk into the light".