Vicious and Vengeful by V. E. Schwab (Villains Series) (Original Hardcover Book Set)

Victor and Eli started out as college roommates―brilliant, arrogant, lonely boys who discover that, under the right conditions, someone can develop extraordinary abilities – become ExtraOrdinary.

Vicious

Ten years after they turned on each other, Victor has escaped from prison and wants revenge on the man who put him there. Eli is hunting down and killing every EO he can find, convinced that they are a crime against God. All except his sidekick, a woman whose power is persuasion and whom he cannot defy. Armed with terrible power on both sides, driven by the memory of betrayal and loss, the arch-nemeses have set a course for revenge.

Vengeful

Marcella Riggins needs no one. Flush from her brush with death, she’s finally gained the control she’s always sought―and will use her newfound power to bring the city of Merit to its knees. She’ll do whatever it takes, collecting her own sidekicks, and leveraging the two most infamous EOs, Victor Vale and Eli Ever, against each other once more.

With Marcella’s rise, new enmities create opportunity―and the stage of Merit City will once again be set for a final, terrible reckoning.