0:00 On a pitch-black stretch of Lake Herman Road outside Benicia, two high school sweethearts sat in a parked Rambler with the heater humming against the December chill.0:12 When the heavy footsteps came crunching across the gravel, the young man reached for the key, but the glass shattered before the engine ever turned.0:24 Last week, we walked through the bitter cold of Florida highways where Aileen Wuornos slipped into darkness after a lifetime of cruelty.0:35 Tonight, we turn the lens toward Northern California in the twilight of the nineteen sixties, where a shadow stepped out of the fog with no face, no origin, and no purpose other than to terrify an entire nation.0:51 Out here by my creek, the water just slides along quiet-like.0:56 But forty-odd years on the railroad taught me that you can feel a freight train rumbling through the rails long before you ever see its headlight.1:07 That's just about what rolled over the San Francisco Bay Area between nineteen sixty-eight and nineteen sixty-nine.1:16 Seven people attacked in dark turnouts, quiet hillsides, and city cabs.1:22 Five of them never made it home.1:24 Two survived to tell what they could, though what they saw was little more than a silhouette against headlights.1:33 But what truly froze the blood in people's veins wasn't just the brutality in the dark.1:40 It was the mail.1:41 On August first, nineteen sixty-nine, three nearly identical envelopes landed on the editors' desks at three different newspapers: the San Francisco Chronicle, the San Francisco Examiner, and the Vallejo Times-Herald.1:58 Inside was a handwritten confession detailing things only the killer and the cops could know.2:05 And folded right alongside those pages was a piece of a puzzle.2:10 A cryptogram.2:11 Four hundred and eight characters of strange shapes and symbols.2:16 The letter carried an ultimatum: print this cipher on the front page by Friday, or he would cruise around all weekend shooting people at random until a dozen lay dead.2:29 Imagine being an editor holding that paper in your hands.2:34 Ink, paper, and blood all tangled up on your desk.2:38 Print it, and you hand a murderer a megaphone.2:41 Refuse, and every single soul walking to the grocery store that Saturday is carrying a target on their back.2:50 They ran the cipher.2:51 And so, the panic wasn't just lurking in isolated lovers' lanes anymore.2:57 It moved right inside the front door with the morning edition.3:02 A Salinas schoolteacher named Donald Harden and his wife Bettye sat at their breakfast table with pencil and paper.3:11 Neither of them were spooks or mathematicians.3:14 Bettye just figured that a creature so obsessed with terror would have one word on his mind before all others.3:23 She looked for the word "kill." And sure enough, Bettye's hunch pried the whole lock open.3:30 The message didn't give a name.3:32 Instead, it gave an icy window into a fractured mind.3:36 The killer wrote that he liked killing because it was more fun than hunting wild game in the forest, because man was the most dangerous animal of all.3:48 He claimed every person he murdered would become his slave in the afterlife.3:54 When doctors at the California Medical Facility in Vacaville read that text, they saw a deeply isolated man, drowning in his own profound inadequacy, building a monstrous fantasy just to feel powerful.4:10 You know, in every good documentary, there's that quiet shot of the town after the siren fades.4:17 The yellow school buses rolling past the eucalyptus trees with the windows shut tight.4:24 Parents keeping their children off the front lawns.4:28 Rumors drifting from kitchen to kitchen like woodsmoke.4:32 That is what this creature truly wanted.4:35 He wanted to live inside everyone's head.4:38 He began signing his letters with a crosshair symbol: a circle cut through by a cross.4:45 He called himself the Zodiac.4:47 He sent pieces of a dead cab driver's bloodstained shirt through the mail to prove he had been there.4:55 He bragged, he taunted, and he sent more ciphers.4:59 Over the years, he claimed thirty-seven murders, though investigators could only ever tie him to those five victims in the Bay Area.5:09 Then, after nineteen seventy-four, the mailbox went stone cold silent.5:15 He just...5:16 stopped.5:16 Dr.5:17 David Van Nuys, a psychiatrist who studied the case, suggested the man might have suffered from dissociative issues that quieted with age, bleeding the venom out of his pen.5:30 Others thought he ended up locked away for some other crime, or maybe he died alone in a room somewhere, taking the truth with him into the dirt.5:41 But the silence didn't bring peace.5:44 When a killer disappears without a face, suspicion hangs over an entire generation.5:51 Neighbors looked sideways at quiet men who worked solitary shifts.5:56 The police chased hundreds of leads, but the only suspect they ever publicly named was Arthur Leigh Allen, a former schoolteacher who died in nineteen ninety-two without charges ever sticking.6:11 Then time did what time always does.6:14 It stretched fifty years down the track, turning flesh-and-blood terror into books, movies, and internet forums.6:22 People started treating an open murder file like a parlor game.6:27 That brings us to just a few days ago, on November second, when a private cold-case group calling themselves the Case Breakers made headlines around the world.6:40 They claimed they had cracked the riddle once and for all.6:44 They pointed a finger at a man named Gary Francis Poste, an Air Force veteran and long-time house painter who passed away back in twenty-eighteen at the age of eighty.6:57 The Case Breakers stood up and said the forehead wrinkles and scars on Poste's face were an irrefutable match to the famous nineteen sixty-nine police sketch.7:10 They claimed his name was buried inside the ciphers as an anagram.7:15 They even tried linking him to the nineteen sixty-six murder of Cheri Jo Bates in Riverside, pointing out a paint-splattered watch left at the scene and his four decades of painting houses.7:30 Well, I tell you what.7:31 The internet caught fire.7:33 Folks cheered that the phantom had finally been dragged into the light.7:39 Now, I know how that sounds.7:41 But hang on.7:42 The Federal Bureau of Investigation and local police departments immediately stepped up to the microphone and poured a cold bucket of creek water right over the whole thing.7:55 The authorities made it plain: Gary Francis Poste is not currently a suspect.8:01 The evidence put forward is purely circumstantial.8:05 David Oranchak, the web designer who helped crack the Zodiac's infamous three-hundred-and-forty-character cipher back in twenty-twenty, openly doubted that the killer ever hid an anagram of his name in those letters.8:22 To the law, and to the families of those five victims, the file remains completely UNRESOLVED.8:30 It's tempting, isn't it?8:31 We humans hate an unfinished sentence.8:34 When somebody leaves a five-decade scar across our communities, we want a name to put on the headstone.8:42 We want to say, "Look, there he is, that's the monster, and he's dead." But real life doesn't always tie up with a neat red ribbon like a Sunday-night picture show.8:55 The enduring tragedy of the Zodiac isn't just the ciphers or the taunts mailed to the press.9:02 It is the five young lives cut down in the dark, and a shadow that managed to outlive the century because the truth proved slippery as a wet creek stone.9:14 Down below the porch, that freight train whistle is fading into the gap.9:20 Out there in the dark, the hills are quiet again.9:24 But fifty years later, every time an old envelope turns up or a retired cop looks back at a dusty sketch, that shadow stirs.9:33 And until the hard proof shows up, we are all still standing on that roadside, waiting for an answer that may never come.9:43 Well.9:43 That's about the size of it.
