My supper that night consisted of a peanut-butter-and-pickle sandwich, accompanied by Diet Pepsi over ice. I ate in my minuscule living room, curled up on the sofa tucked into the window bay. In lieu of dinnerware, I used a fold of paper toweling that doubled as a dainty lip wipe when I'd finished my meal. With spring on the move, it was not quite dark out. The air was still chilly, especially once the sun went down. Through the partially opened window, I could hear a distant lawn mower and the occasional fragment of conversation as assorted people walked by. I live a block from the beach on a side street that provides overflow parking when Cabana Boulevard gets jammed.

I slid down comfortably on my spine, my sock feet on the coffee table, while I settled in to work. I went through the file quickly at first, just to get the lay of the land. A detective named Brad Crouse was lead investigator on the case. The other investigating officers, aside from Stacey Oliphant, were Detective Keith Baldwin, Sergeant Oscar Wallen, Sergeant Melvin Galloway, and Deputy Joe Mandel. A lot of manpower. Crouse had typed the bulk of the reports, using multiple carbons, which Stacey had apparently then photocopied from the old murder book. Judging from the number of strikeovers, I had to guess Detective Crouse had not been first in his class in secretarial school. I fancied if I put my ear to the page, I'd pick up the churlish echoes of his long-ago curses embedded in the lines of print.

It's odd going through an old file, like reading a mystery novel where you spoil the ending for yourself by peeking ahead to the very last page. The final document, a letter from a soils expert in San Pedro, California, was dated September 28,1971, and indicated that the sample submitted by the Santa Teresa County Sheriffs Department would be impossible to distinguish from samples taken from similar deposits across the state. Sincerely. So sorry. End of the line for you, before I went back to the beginning and started reading again, this time taking notes.