Madman's Daughter Books in Order

The Madman's Daughter books are Megan Shepherd's Gothic YA trilogy, built around Juliet Moreau, the daughter of a disgraced scientist whose work should have stayed buried. The series starts in a foggy Victorian world of hospitals, secrets, and ruined family reputations, then keeps widening into stranger and darker territory. If you like classic monster fiction but want it filtered through a determined teenage heroine, this is the right shelf.

Juliet is curious, stubborn, and never as powerless as other people assume.

In The Madman's Daughter, Juliet learns that her father may still be alive after years of scandal and disappearance. She follows Montgomery, the young man who once worked for her family, toward a remote island and finds the truth at its center: Dr. Moreau has been experimenting on animals, reshaping them into something horribly close to human. The island matters because it is not just creepy scenery. It is a closed world where science, control, pity, and ambition get pushed to extremes.

Her Dark Curiosity brings Juliet back to London, but the city is no safer than the island. Friends begin dying, a killer leaves a brutal signature behind, and Juliet's own health forces her to hunt for answers she would rather avoid. The second book leans harder into murder mystery and hidden identity, while keeping the emotional center on Juliet, Montgomery, and Edward. It is still romantic, but it is also a story about how hard it is to love people whose secrets may destroy them.

Then the trilogy trades gaslit streets for the moors.

In A Cold Legacy, the surviving characters flee to a remote Scottish estate owned by the unsettling Elizabeth von Stein. What looks like a refuge turns into another laboratory of locked rooms, secret histories, and dangerous ideas about life and death. That shift works well because the series is really about inheritance as much as horror. Juliet is always asking what she carries from her parents, what can be refused, and what happens when knowledge becomes a kind of curse.

Across all three books, expect body horror, love triangles, cliffhangers, and plenty of argument about where humanity really lives, in the mind, the soul, or the body. The classic inspirations are easy to spot, but the through line is Juliet herself. She wants truth, even when truth is ugly. That makes the trilogy a good fit for readers who like their YA dark, dramatic, and full of old-fashioned atmosphere without giving up speed.