A Killer's Code

Daniela Vega, Book 3

By: Isabella Maldonado

Narrated by: Almarie Guerra, Feodor Chin

A dead man’s riddles—and secrets—thrust an FBI codebreaker into a deadly cross-country race for justice in a propulsive thriller by the Wall Street Journal bestselling author of The Cipher.

During a recent undercover sting gone bad, hit man Gustavo Toro died in the arms of FBI Special Agent Daniela “Dani” Vega. But Toro had secrets he refused to take to the grave.

In the event of his death, Toro left behind a video that promises to expose a mysterious mastermind who has been operating with impunity for decades. But there’s a catch. Dani’s team must follow Toro’s cryptic clues on a cross-country hunt for justice, and piecing together his past is more twisted than Dani could have imagined.

But as Dani and her team race to gather the evidence, it’s clear this powerful adversary will stop at nothing to keep their secrets—including eliminating those who threaten to reveal them.

©2025 Isabella Maldonado. (P)2024 Brilliance Publishing, Inc., all rights reserved.

Critic reviews

“As in the previous books, Maldonado leverages her law enforcement background to lend the proceedings weight and authenticity, while flashbacks predating Toro’s death ratchet up the suspense. This series continues to impress.”—Publishers Weekly

“This riveting thriller keeps you on the edge of your seat from start to finish. Along with a solid and thrilling plot, relatable characters, and excellent world-building, the twists, surprises, action, and suspense demanded my attention.”—Mystery and Suspense Magazine

“For fans of FBI procedurals, cross-country hunts, and cryptic clues!”—Book Riot

Interesting plot

I love this series. Danielle Vega does a great job as well as her teammates. I enjoyed the fact that the “Bad guy” show a change and had a conscience towards the end. There are too many positive things for me to discuss here. I’m looking forward to the next book in the series.

Love this series

Maldonado’s character development has only gotten better. Both narrators were great. Can’t wait for the next book in this series

Daniela Vega is fantastic

I borrowed the ebook in Kindle Unlimited with the audiobook. I loved listening to the action that Dani and the FBI agents get into. I can't wait for the next book. Maybe there will be more about her family in the future, too. The narration was great, too.

Dani Vega is back in an action-packed case.

When I saw Isabella Maldonaldo was releasing a new Daniella Vega book I dropped any other reading projects, borrowed a copy of the book from Kindle Unlimited that included the audiobook and settled in to go on another adventure with Dani and her FBI team.

A Killer’s Code brought several threads from the first two books in this series to satisfying conclusions and opened a few new questions that will leave me wondering if I can draw any accurate conclusions before the next book in the series shows up in my kindle.

If you enjoy police procedurals with well-developed characters who have their own human failings and issues, The Daniela Vega series is worth your time. If you’ve read the first two books in the series, what are you waiting for? Grab a copy and get some of your questions from the earlier books answered.

If you choose to listen to the audiobook version of A Killer’s Code, you are in for a treat. Narration duties are once again covered by Almarie Guerra and Feodor Chin. Both narrators are top-notch and bring Dani Vega and the other characters to life.

Great story

Kept me engaged the whole time and wondering what would happen next. I’ve enjoyed this series very much!

Lots of twists and turns. Good character development. Believable characters.

Plot was a bit of a reach, but was enjoyable nonetheless. Highly recommended for anyone who enjoys the genre.

Methodical Police Procedural

Justice prevailed for the latest case for Special Agent Vega. She is such a badass. I hope there’s more to come for this series.

Great Story

love all of Isabella Maldonados books! they have good character development and leave yoy wanting to continue to stay in touch with each one. then comes the story, that will knock you off your seat and keep you hooked.