When trauma therapist Mara Linton enters the Halberg Institute to erase the memory of her husband’s death, she’s promised healing through a new form of “mirror therapy.” But the reflections she sees don’t just replay her past — they rewrite it. As fragments of her identity begin to split and merge, Mara must confront an impossible truth: one version of her deserves to live, and the other was never real at all.
A haunting psychological thriller about memory, identity, and the lies we build to survive.
Nicole Castellanos is a storyteller drawn to the edge of the unknown — where science, myth, and human emotion collide. With a background in linguistics and a lifelong fascination with cryptic communication, her work explores how language and memory shape identity. The Obsidian Signal is her debut novel, blending psychological depth with cinematic tension. When she isn’t writing, Nicole can be found exploring coastlines, decoding vintage shortwave broadcasts, or sketching story ideas in storm-weathered notebooks.View all by castellanos Nicole
