Arthur Leigh Allen: The Zodiac Killer’s Prime Suspect? | Episode 9

Episode 9 of The Zodiac Killer series focuses entirely on Arthur Leigh Allen — the man law enforcement pursued for decades and the only suspect ever publicly named in the case.

From Donald Cheney’s explosive 1971 account to Michael Mageau’s later identification, Allen’s case is packed with disturbing coincidences, alleged admissions, and behavior investigators found impossible to ignore.

We break down the full timeline: Allen’s background in Vallejo, his reported pre-crime statements, the Zodiac Sea Wolf watch, the Lake Berryessa alibi, the search warrants, the pipe bombs, and the claims made in Netflix’s 2024 documentary This Is the Zodiac Speaking.

But this episode also examines the other side of the case: the fingerprints that did not match, the handwriting experts who excluded him, the partial DNA that failed to connect him, and why he was never charged.

Was Arthur Leigh Allen the Zodiac Killer — or the most compelling wrong suspect in true crime history?

00:00 Prime Suspect Setup

01:43 Allen Early Life

04:24 Grievances And Red Flags

05:54 Cheney Bombshell Tip

07:00 Lovers Lane Details

11:54 Credibility And DNA Wrinkle

15:10 First Police Interview

16:26 Watch Alibi And Knives

19:33 Handwriting Excludes Allen

20:43 Search Warrant And Arrest

22:51 Spinelli Names Allen

25:27 1991 Search And Bombs

27:48 Blue Rock Springs Revisited

28:58 Mageau Photo Lineup

30:55 Voice Witness Limits

32:28 Allen Dies and Search

33:14 DNA and Handwriting Tests

35:52 Forensic Caveats Explained

37:01 Netflix Seawater Claims

40:49 Beach and Riverside Trips

44:35 Confession Accounts Weighed

46:19 Case For and Against

53:20 Why Allen Endures

56:53 Final Question and Next

About Crime Time Inc.

Season 5 of Crime Time Inc. broadens its reach across two sides of the Atlantic.

This season features cases from Scotland and across the wider UK — rooted in real investigative experience — alongside deep dives into some of the most infamous murder cases in American history.

Hosted by former detectives Simon and Tom, with experience in both the UK and the United States, including time working alongside the FBI, the show strips away sensationalism to explain how crime and justice really work.

Two crime worlds. One podcast.

New episodes released regularly throughout the season.

Our Website: https://crimetimeinc.com/

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