When the water level of Raven Lake suddenly drops overnight, Detective Mara Vance is called to investigate what seems like a strange environmental mystery. But beneath the quiet surface of the lake lies a forgotten government facility sealed away for decades — and a terrifying secret no one was meant to uncover.
As Mara dives into the flooded tunnels beneath the lake, she discovers an abandoned containment station, a missing researcher, and evidence of a creature that has been trapped underground since a failed experiment in 1998. When the ancient predator awakens and the station begins to collapse, Mara must race against time to seal the tunnels before the nightmare escapes into the world above.
But the deeper she goes, the more she realizes the truth is far worse than anyone imagined.
Because the monster beneath Raven Lake is not alone.
Detective
Thriller
Mystery
Monsters
Conspiracy
Survival
Exploration
Adventure
Crime
Audiobook details
Rating★★★★★ 5.0 (1)
GenreMystery and Thriller
Length50 mins
Narrated bySelect Your Own
FormateBook with Audio
Publish dateMar 6, 2026
LanguageEnglish
Table of contents
1Chapter 1
6Chapter 6
2Chapter 2
7Chapter 7
3Chapter 3
8Chapter 8
4Chapter 4
9Chapter 9
5Chapter 5
About the author
Karen Sondra
Karen Sondra is a passionate writer whose words pulse with raw emotion, vivid imagery, and an unyielding curiosity about the human experience. With a deep love for language, she crafts stories, essays, and poetry that explore the complexities of love, resilience, identity, and the quiet beauty in everyday moments. Driven by an insatiable drive to connect hearts through honest expression, Karen pours her soul into every line, inviting readers to feel seen, understood, and inspired. When she’s not lost in her notebook or typing furiously, she’s chasing sunsets, collecting fragments of overheard conversations, and dreaming up her next tale.View all by Karen Sondra
