Fiction - Thriller - Psychological
318 Pages
Reviewed on 04/26/2024
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Author Biography

Lisa Towles is an Amazon bestselling, award-winning crime novelist and a passionate speaker on the topics of fiction writing, creativity, and self care. She has 11 crime thrillers in print with a new title, Codex, forthcoming in June of 2024. Her 2023 thriller, Salt Island won both a Readers Choice and a Pencraft literary award. Salt Island is the second book in her E&A Investigations series following Hot House (June, 2022). Lisa is a member of Mystery Writers of America, Sisters in Crime, and International Thriller Writers and is deeply committed to supporting writers' success. She is Board Member of a Bay Area nonprofit ( and speaks frequently to groups of business leaders and writers. She has an MBA in IT Management and works full-time in the tech industry in the San Francisco Bay area.

Learn more at,, or follow Lisa on social media:

    Book Review

Reviewed by K.C. Finn for Readers' Favorite

Codex is a work of fiction in the psychological thriller, drama, and suspense subgenres. It is best suited to mature readers owing to the use of explicit language throughout and some scenes of moderate violence. Penned by author Lisa Towles, readers are invited to enjoy a fast-paced read intertwining a whistleblower's revelations, a fatal car crash, and a sinister cover-up. FBI Agent Angus Mariner, grieving the loss of his wife, is thrust into a whirlwind of intrigue when a billionaire's gift turns into suspicion and investigation. As Mariner delves deeper, he uncovers a web of corruption linked to his wife's untimely death, leading him to confront unthinkable truths and perilous decisions. Amidst the chaos, Mariner must navigate a treacherous path of deception and danger, determined to uncover the organization's sinister agenda and find closure for his greatest loss.

Author Lisa Towles has a real flair for suspense and thrills, and she’s crafted an exhilarating read from cover to cover that feels like you’re being swept away to a dangerous new world of corruption and secrets. I was really impressed by the gripping pace and the narrative, which is filled with unexpected twists and heart-pounding moments that are perfectly positioned to ramp up the suspense and have you racing to find out what happens next. Mariner's journey of redemption and discovery is as well described as the character himself, drawing me into his world of secrets and betrayal with excellent speech and thought presentation. We get to sit right on his shoulder from grief and isolation through to danger, pressure, and triumph, getting to know his inner workings and amazing capabilities along the way. The intricate plot and well-developed characters kept me guessing until the very end, while the fast-paced writing style made it impossible to put the book down. Overall, Codex is a must-read for fans of psychological thrillers, and I would certainly recommend it for fans of emotive and satisfying novels.


Great read!

Brother Seamus

I felt like I was on an unpredictable thrill ride all the way through and grateful to know someone like Angus Mariner. Superbly crafted novel!