Toxxic by Jane Hennigan

Forty-four years ago, as any schoolgirl can tell you, the moth’s eggs hatched and an army of caterpillars spread their tiny toxic threads on every breath of wind. Since then, men have been cloistered, protected from birth against the deadly poison.

But now there’s a vaccine – a way that men can leave the facility without dying or suffering from psychosis. Emerging, into their new world, eyes wide with wonder at every new experience, the truth soon becomes clear.

This world was not made for men. And they are not safe.

Royal Blood by Aimée Carter

Kicked out of her American boarding school, Evan is sent to live with her estranged father, the King of England. Her existence as his illegitimate daughter is top secret - until someone leaks it to the press. Suddenly she's the focus of a thousand lurid headlines, plus the hatred of her stepmother the Queen and half-sister Princess Maisie.

Then the royal scandal intensifies... After Evan is seen disappearing with a journalist's son at a party, he is found dead and she becomes the primary suspect in a murder investigation. Did "the Killer Princess" really do it? It seems that only the Queen's gorgeous nephew Kit will help Evan clear her name. But can she really trust anyone at the palace?