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Michael F Cole

Winner, True Crime Category -- NYC Big Book Award, 2021

"The Zodiac Revisited is a well-organized and brilliantly presented work. It's highly recommended." -- Readers' Favorite 5-star review (Volume 1).

﻿"Must read... An insightful and intriguing view of the reign of terror that unfolded for nearly a decade in San Francisco." -- Reedsy Discovery 5-star review (Volume 1).

Understand History's Most Enigmatic Serial Killer

In December of 1968, a serial killer began orchestrating a campaign of terror in the San Francisco Bay Area. Not satisfied with the simple act of murder, he taunted law enforcement and the public by writing letters to local newspapers. Through often cryptic and bizarre content—including four ciphers, three (now two) of which have never been solved—the psychopath played a twisted game. Reporters dubbed the man the "Cipher Killer," but the murderer chose a different name for himself: the Zodiac. Eventually, he would claim to have murdered thirty-seven. Law enforcement, however, could only account for five.

In 1971, authenticated communications with the Zodiac ceased. The elusive fugitive resurfaced briefly three years later, sending a small number of communiqués, before disappearing for good. What started out with shocking abruptness slowly dissolved into mysterious uncertainty. To this day, the Zodiac's true identity remains one of the twentieth century's greatest mysteries...

In Volume 1 of The Zodiac Revisited, Michael reviews the facts of the case, building a foundation for the analysis that follows in Volumes 2 and 3.

Derek Shetterly

Twin Prime Publishing

The Zodiac Revisited

The Zodiac Revisited, Volume 1: The Facts of the Case

Winner, True Crime Category -- NYC Big Book Award, 2021 (Volume 1)

"The Zodiac Revisited is a well-organized and brilliantly presented work. It's highly recommended." -- Readers' Favorite 5-star review (Volume 1).

﻿"Must read... An insightful and intriguing view of the reign of terror that unfolded for nearly a decade in San Francisco." -- Reedsy Discovery 5-star review (Volume 1).

Understand History's Most Enigmatic Serial Killer

In December of 1968, a serial killer began orchestrating a campaign of terror in the San Francisco Bay Area. Not satisfied with the simple act of murder, he taunted law enforcement and the public by writing letters to local newspapers. Through often cryptic and bizarre content—including four ciphers, three (now two) of which have never been solved—the psychopath played a twisted game. Reporters dubbed the man the "Cipher Killer," but the murderer chose a different name for himself: the Zodiac. Eventually, he would claim to have murdered thirty-seven. Law enforcement, however, could only account for five.

In 1971, authenticated communications with the Zodiac ceased. The elusive fugitive resurfaced briefly three years later, sending a small number of communiqués, before disappearing for good. What started out with shocking abruptness slowly dissolved into mysterious uncertainty. To this day, the Zodiac's true identity remains one of the twentieth century's greatest mysteries...

Having established an analytical foundation in Volume 1, Michael uses Volume 2 to look across the entirety of the case and identify meaningful threads of commonality, exploring subjects such as the killer's methodology, persona, and ciphers.

The Zodiac Revisited, Volume 2: Analysis and Fact-Based Speculation

Winner, True Crime Category -- NYC Big Book Award, 2021

"The Zodiac Revisited is a well-organized and brilliantly presented work. It's highly recommended." -- Readers' Favorite 5-star review (Volume 1).

﻿"Must read... An insightful and intriguing view of the reign of terror that unfolded for nearly a decade in San Francisco." -- Reedsy Discovery 5-star review (Volume 1).

﻿Understand History's Most Enigmatic Serial Killer

In December of 1968, a serial killer began orchestrating a campaign of terror in the San Francisco Bay Area. Not satisfied with the simple act of murder, he taunted law enforcement and the public by writing letters to local newspapers. Through often cryptic and bizarre content--including four ciphers, three (now two) of which have never been solved--the psychopath played a twisted game. Reporters dubbed the man the "Cipher Killer," but the murderer chose a different name for himself: the Zodiac. Eventually, he would claim to have murdered thirty-seven. Law enforcement, however, could only account for five.

In 1971, authenticated communications with the Zodiac ceased. The elusive fugitive resurfaced briefly three years later, sending a small number of communiqués, before disappearing for good. What started out with shocking abruptness slowly dissolved into mysterious uncertainty. To this day, the Zodiac's true identity remains one of the twentieth century's greatest mysteries...

In the final volume of The Zodiac Revisited, Michael uses the insights developed in Volume 2 to reexamine the killer's letters and crimes as well as the possibility that the killer committed a series of murders in Southern California.

The Zodiac Revisited, Volume 3: Tying all together