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In Michele McNamara's book, I'll Be Gone in the Dark One Woman's Search for the Golden State Killer, there is a section about geographic profiling (pages 296-300), that included plots of where the EAR was likely to have lived at the time of the attacks in the east Sacramento area. The theory is that a serial offender doesn't want to strike too close to home for fear of drawing LE attention that could identify him. The offender will use misdirection such as striking on opposite sides of his buffer zone to keep LE from zeroing in on his own neighborhood, and to avoid areas experiencing increased surveillance due to recent attacks. The attacks may occur farther away over time, but the buffer zone should remain fairly stable. The end result is to identify a theoretical geographical anchor point to be used in searching for the offender. In the book the author discusses methods used by Paul Holes and then plotted an anchor point near the intersection of Dewey Drive and Madison Avenue in Carmichael, CA. She also plotted an anchor point developed by Kim Rossmo, a prominent geographic profiler, as located near the intersection of Coyle Avenue and Millburn Street in Carmichael CA., about a half mile northwest of the anchor point identified by Paul Holes. At face value it doesn't seem like a good profile if JJD was living in Auburn, CA, some 30 miles away. JJD did move to a house in Roseville in July, 1977 located about 4 miles NNE of the two plotted anchor points, but it wasn't until after 22 attacks had already been made by the offender. However, there was one person important to the search living within a third of a mile of both anchor points. JJD'S former fiance, Bonnie, married another man late in 1972 and lived with him in an apartment in Sacramento for a few years. In 1976 and 1977 the local directory listed Bonnie and her husband as living at a house on Hesper Way in Carmichael, CA. This was the period when the attacks started and were the most frequent in the East Sacramento area. The home is located within a third of a mile WNW of the anchor point identified by Paul Holes, and within a third of a mile SSE of the anchor point identified by Kim Rossmo. If a buffer zone is an area of primary importance to an offender, and one that he doesn't want discovered, how is it that Bonnie occupied the buffer zone and not JJD? JJD always lived well outside of the buffer zone and the attack areas. He probably avoided attacking too close to Bonnie's house for fear of being named by her or her husband as a potential suspect. But he might have been drawn to her general area of East Sacramento because he was incapable of completely letting go of his former relationship with her. Out of the first 20 attacks, the offender struck 8 times within 2 miles of Bonnie's residence. Five of those eight attacks occurred within a mile of Bonnie's residence, and the closest attack was made within a half mile of her residence. I was one who discounted the emphasis on Bonnie as a cause for the attacks, but it would seem from the above that JJD may have had more of an obsession about her or the breakup than I realized before. Perhaps he was attempting to instill fear in Bonnie about living in the area. I would be interested to know what people think of geographic profiling in this case. Was it useful, or could it have been more useful if approached differently? Does the fact that Bonnie lived in or near the predicted buffer zone have any meaning, or was it just a coincidence?

After months of pouring thru all of the police reports & files in this case, and talking to current and former investigators for hours and hours, I have come to the conclusion that prowling, terrorizing, raping, burglary, was this guy's full time job!

There were many reports of prowlers that were likely EAR prowling 8-9pm.  Some residents also received calls at 8-9pm.  This guy prowled, and raped at night mostly, after 8-9pm, and even attacking as early as 6:30am. There was evidence this guy called some victims at mid morning around 10am. There seems to be a void between 10am & 8pm for the most part. We know this guy went into people's homes when they were not at home which is usually working hours, 9-5, which is likely when he went there. I simply do not see a time when this guy could have a full time meaningful job. Plus, he's human, he has to sleep sometime. I think it's some point during that 10am to 8pm timeframe. I could see this guy being on some sort of disability, maybe one of those types that had an issue that wasn't really effected by it but still qualified for disability. If he had a job, it was likely part time, seasonal, or he took work when and if he needed extra $ The 9pm to 6am stalking/prowling/attacking just makes a full time 9-5 job out of the question to me. That, or he really does come from the 'well to do' or 'wealthy' family where he doesn't need money. His activities were his full time job!

And you left out the part about the Auburn police chief having a prowler at his house that he suspected was DeAngelo. That was after DeAngelo was terminated and made a threat against the chief.