She's desperate to break out of a life of hiding. But doing so could get her killed. Twenty-year-old Havanna wants nothing more than to use her powers without reserve. However, she's forced to hide in a village, away from the evil, power-hungry Dormant King. Using her lightning power could expose her to the Backers-who do the Dormant King's dirty work in hunting down her kind-and the bloodthirsty, fatal Dormants. Havanna's desperation moves her to use her power for the first time, but with disastrous consequences. To make things right, she breaks out of hiding to hunt down the Dormant King. While searching for clues, understanding the scope of her power, and exploring the kingdom she begged to see her whole life, she finds that this quest is more difficult than expected. Will she be able to face the Dormant King on her own, or will she have to form an alliance of trusted confidants to help her? The Call of Thunder is the first book of the Hidden Heroes series. If you like characters that struggle with identity, a fantasy world, and adrenaline-spiking action, then you'll love Sarah Blynne's striking adventure series!