LOS ANGELES (AFP) - A writer who penned a piece titled "How To Murder Your Husband" is on trial in the United States for... killing her husband.
It is a case that has all the hallmarks of classic detective fiction - a huge insurance payout, an impecunious suspect who claims to have amnesia, a missing weapon, and surveillance footage that seems to have caught the culprit red-handed.
But for novelist Nancy Crampton Brophy, it's not the plot of her latest book; it's real life in an Oregon court room.
Crampton Brophy, whose "Wrong Never Felt So Right" series of novels include "The Wrong Husband" and "The Wrong Lover", stands accused of shooting Daniel Brophy, using a gun whose now-missing barrel she bought on eBay.
Prosecutors say the 71-year-old writer was struggling to make payments on her mortgage, but kept up multiple life assurance policies that would pay out a total of US$1.4 million (S$1.94 million) in the event of her husband's demise.
"I do better with Dan alive financially than I do with Dan dead," she said as she took the stand in Portland this week, The Oregonian newspaper reported.
"Where is the motivation I would ask you? An editor would laugh and say, 'I think you need to work harder on this story, you have a big hole in it.'"
Prosecutor Shawn Overstreet said security camera footage had captured Crampton Brophy's minivan outside the Oregon Culinary Institute on June 2, 2018 at almost exactly the time her chef husband was killed in one of the school's classrooms.
"You were there at the same time that someone happens to be shooting your husband....with the exact type of gun that you own and which is now mysteriously missing," he said.
Crampton Brophy told the court she has no memory of being there, though acknowledges she must have been, insisting the CCTV images show her in the area because she was driving around getting inspiration for a story.
"This is not a man I would have shot because I had a memory issue. It seems to me if I had shot him, I would know every detail."
Daniel Brophy, 63, was found dead that morning by students readying for a class. He had been shot twice.
Investigators say the barrel from the Glock handgun used in the slaying was purchased by the suspect on eBay.
That barrel - which would contain damning forensic clues - has never been recovered, despite an exhaustive police search.
Crampton Brophy admits having bought a Glock pistol, which she says was for her husband to protect himself when he went mushroom hunting in the woods, but says the missing barrel was purchased as part of research for an unfinished novel.
"There was a big separation between what was for writing and what was for protection," she told the court, The Oregonian reported.
Prosecutors say Crampton Brophy, whose "How To Murder Your Husband" remains accessible online and whose books can be bought on Amazon, was facing financial ruin before her husband's death, but continued to pay into 10 separate life insurance policies.
The blog on murdering a husband discusses methods and motivations for dispatching an unwanted spouse. These include financial gain and the use of a firearm, although it notes guns are "loud, messy, require some skill".
"But the thing I know about murder is that every one of us have it in him/her when pushed far enough," the essay says.
The trial, which began in early April, is ongoing.