We Shall Be Monsters (We Shall be Monsters # 1) by Tara Sim

Frankenstein meets Indian mythology in this twisty, darkly atmospheric fantasy where the horror is not the monsters you face but the ones you create.

After her sister Lasya’s sudden death, Kajal vows to do whatever it takes to bring her back. No cost is too great, even if it means preventing Lasya’s soul from joining the cycle of reincarnation. But as Kajal prepares for the resurrection, her sister’s trapped soul warps into a bhuta—a violent, wraith-like spirit hell-bent on murdering those who wronged it in life. With each kill, the bhuta becomes stronger and fiercer, and Kajal’s chances of resurrecting Lasya with her soul intact grow slimmer.

Blamed for Lasya’s rampage and condemned as a witch, Kajal is locked away with little hope of escape. That is, until two strangers who label themselves rebels arrive and offer to free her. The catch: She must resurrect the kingdom’s fallen crown prince, aiding their coup to overthrow the usurper who sits the throne. Desperate to return to Lasya’s body, Kajal rushes to revive the crown prince . . . only to discover that she’s resurrected another boy entirely.

All her life, Kajal has trusted no one but her sister. But with Lasya dead and rebels ready to turn her over to the usurper’s ruthless soldiers, Kajal is forced to work with the boy she mistakenly revived. Together, they must find the crown prince before the rebels discover her mistake, or the bhuta finally turns its murderous fury on the person truly responsible for Lasya’s death: Kajal.