350494 Kingdom of the Cursed by Kerri Maniscalco

With the Prince of Wrath at her side, Emilia sold her soul to become Queen of the Wicked and travelled to the Seven Circles to fulfil her vow of avenging her sister. But the first rule of the Wicked? Trust no one. And it's soon clear that nothing in Hell is what it seems. Even Wrath may be keeping secrets about his true nature. But that suits Emilia just fine - she's got secrets of her own. Faced with backstabbing courtiers, princes who delight in fear, luxurious palaces, dazzling galas, and conflicting clues, Emilia finds herself on a mission to unlock the mysteries of her own past and uncover the answers she craves. As long as her sins don't catch up to her first . . .