I've written several times here that that was the one case that really got under my skin. I've read nearly everything written about it. I still cht k on it today to see if anything new has come up.
Lot of reasons that case got to me... being in Calif where it happened, and not that far away... it got HUGE attention here. It did Nationwide as well but here it was MEGA news.
Also... and this is weird... met a guy in the Army that i'm sure was trying to convince me he was the Zodiac, (no, I don't think he was). Things he hinted at... some of his 'perversions', etc.
Then there was the whole unsolved code.... that intrigued me.
And today I stay interested simply because it's unsolved, and probably never will be. - JamesJM