Forbes Top 30 Mystery Books of All Time

The Cipher by Isabella Maldonado (2020)
A mystery for the digital age, The Cipher follows FBI Agent Nina Guerrera fighting both the ghosts of her own pasts and a serial killer determined to cut her future short. After escaping a kidnapping at 16, Nina lays low and works on becoming untouchable. Unfortunately, a viral video puts her back in the cross hairs of the brutal serial killer she spent her life running from.

Using the internet to taunt Nina, the serial killer becomes known as “The Cipher.” A breakneck reading experience combines with procedural work and deep dives into both the internet and the mind of a murderer, making this book is perfect for fans of the TV show Criminal Minds.