Book 2

The Final Equinox

by Andrew Mayne

Published 13 September 2022

Dr. Theo Cray and FBI agent Jessica Blackwood follow a deadly celestial trail in a thrilling novel by the Amazon Charts and Wall Street Journal bestselling author of Mastermind.

A signal is detected at the outer edge of the solar system. Computational biologist Dr. Theo Cray and magician-turned-FBI-agent Jessica Blackwood are looking—and listening—a little closer.

The man at the center of this cosmic mystery is billionaire Thomas T. Theismann. He’s spent a lifetime—and a fortune—trying to find out if we’re alone in the universe. Highly skeptical, Theo joins the effort to find the source of the signal, and he quickly enlists Jessica to look into the suspicious death of another academic at the lab. As their investigations converge, they uncover curious connections to the otherworldly contact, including a 1970s science-fiction writer and the body of an astronaut found buried in an ancient tomb.

As they delve into Theismann’s history, Theo and Jessica’s fascination with the signal intensifies. How dangerous will the investigation get? That depends on how deep into the unknown Theo and Jessica are prepared to venture.


Mr. Whisper

by Andrew Mayne

Published 1 March 2025

Four brilliant investigators combine forces to outwit an insidious master of online mind control in a gripping thriller by the Wall Street Journal bestselling author of The Final Equinox.

Investigator Sloan McPherson finds a frightened vagrant suffering from amnesia living in a Florida swamp—then learns he disappeared from Oregon when he was a teenager. To find out how he ended up three thousand miles from home thirty years later, Sloan enlists the help of two brilliant colleagues.

FBI agent Jessica Blackwood and scientist Theo Cray have already made an alarming connection. A female classmate of the Everglades drifter disappeared at the same time, and their high school journals reveal ties to an enigmatic figure they both called Mr. Whisper. Under his influence they did as they were told. The case is also attracting the attention of corporate security expert Brad Trasker, whose trail is leading to the dark heart of a master manipulator.

Jessica, Theo, Sloan, and Brad must now bring their unique skills to the table to take down a diabolical adversary. Unless Mr. Whisper’s decades-long control of the vulnerable is too powerful and far-reaching to stop.