Harvest of Sighs (Thornchapel, 3) by Sierra Simone

From the author of the USA Today bestselling Priest and New Camelot series comes the third in a high-heat, gothic, dark academia fairy tale full of lantern-lit rituals, foggy moors, and obsessions that last for a lifetime.

The genius and the sunshine girl. As children, they fought bitterly and often, bickering every chance they got.

But then they grew up.

Then they came back.

Delphine Dansey carries her heart on the outside of her body; she's looking for love and chasing dreams. She's spoiled and selfish, the kind of beautiful that's made for money and fame. But somehow she's ended up in Rebecca Quartey's keeping: a pretty submissive she can't seem to resist, a lover who obsesses and tempts her.

Rebecca thought she'd locked her heart away a long time ago, along with all her other weaknesses. But some doors won't stay closed, no matter how hard she fights to keep them shut. Delphine unravels her, just like their friends are unraveling, just like Thornchapel itself is unraveling.

All year long, they've been sowing lust and jealousy and pain, heedless of the consequences. But a harvest is inevitable, and so now they must reap their sorrows.

And their sighs.