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The Cipher: Nina Guerrera, Book 1 — Unabridged Audiobook

The Cipher: Nina Guerrera, Book 1 is an English-language unabridged audiobook by Isabella Maldonado, narrated by Roxanne Hernandez. FBI agent Nina Guerrera pursues a serial killer who once abducted her, with coded clues and an investigation unfolding in public.

At a glance

  • First book in the Nina Guerrera series, according to the title.
  • The plot centres on FBI Special Agent Nina Guerrera and a serial killer known as the Cipher, who uses coded online clues.
  • Nina works with FBI mind hunter Dr. Jeffrey Wade to pursue the killer across the country.
Price
$6.99Save 72.5%

Reference price: $25.42

Price checked: 11 Nov 2026

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Pros and cons

Pros

  • Unabridged audio format presents the story over a stated 10 hours and 24 minutes.
  • The premise combines an FBI investigation, a recurring personal threat to Nina, and public-facing coded clues.

Technical specifications

8 specifications
Audiobook details
FormatAudiobook
VersionUnabridged
Listening length10 hours and 24 minutes
LanguageEnglish
AuthorIsabella Maldonado
NarratorRoxanne Hernandez
PublisherBrilliance Audio
Publication date1 November 2020

Who is it for?

A good fit for

  • Listeners looking for a crime thriller with an FBI-investigation premise and serial-killer suspense.
  • Audiobook listeners seeking a full-length, unabridged English narration.

Less suited to

  • Readers who want a print or ebook edition rather than an audiobook.

Customer reviews on Amazon

4.4 / 5 · 48,649 ratings
  • 5 stars53%53%
  • 4 stars35%35%
  • 3 stars10%10%
  • 2 stars2%2%
  • 1 star0%0%

Customer feedback describes a suspenseful, engaging story, with readers highlighting the plot, pacing, characters and realistic FBI procedures. Those impressions suit the listing's thriller premise, but opinions are not uniform evidence of how every listener will experience the narration or story. The aggregate rating is 4.4 out of 5 from 48,649 ratings; ratings alone do not explain individual preferences.

Positive themes

  • Customers praise the suspense, plot construction and engaging pace.
  • Feedback also highlights character development and the portrayal of FBI procedures.

Frequently asked questions

Who wrote and narrates The Cipher audiobook?

The listing names Isabella Maldonado as the author and Roxanne Hernandez as the narrator.

How long is this audiobook?

The listed listening length is 10 hours and 24 minutes.

Is this an abridged edition?

The listing identifies the version as unabridged.

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