The Fifth Life of Alicia by Emma Hart

What if your soul returns to its original body, but you remember nothing?

For Alicia, waking up in the world of a historical fantasy novel as Lady Alicia Vermillion, the antagonist destined to die, is nothing short of a nightmare.
Having already died once—which is how she ended up here in the first place—she’s adamant that history isn’t going to repeat itself. Story be damned.
Unfortunately for her, fate is a powerful thing, and despite her best efforts, some things just can’t be changed. When she’s shipped off to the neighbouring country of Stein to marry Grand Duke Kalon Stein, the emperor’s son, she makes a plan: delay their marriage until he meets and falls for the book’s heroine, then prance off into the sunset.
If she never meets the woman, she can never be accused of killing her.
Except nothing is going the way she remembers. The cold, indifferent character in the book is nothing like the obsessive, dedicated man in front of her. As far as Kalon is concerned, Alicia is his, and nothing can change that.
Not even when the heroine shows up ‘early.’
He doesn’t understand why she thinks he’s going to fall for another woman. She doesn’t understand why he hasn’t.
But with threats lurking around every corner, the story Alicia thinks she knows is falling to pieces—and one thing is clear.

There’s more than one way for her to die in this world, and if that happens, Kalon might just burn it to ashes…