Scarlet by Marissa Meyer

Scarlet Benoit's grandmother is missing. It turns out there are many things Scarlet doesn't know about her grandmother, or the grave danger she has lived in her whole life. When Scarlet encounters Wolf, a street fighter who may have information as to her grandmother's whereabouts, she is loath to trust this stranger, but is inexplicably drawn to him, and he to her.

Halfway around the world, Cinder is back and trying to break out of prison―even though she'll be the Commonwealth's most wanted fugitive if she does.

As Scarlet and Wolf unravel one mystery, they encounter another when they meet Cinder. Now, all of them must stay one step ahead of the vicious Lunar Queen Levana.

The adventure continues in this fresh fairytale retelling that combines elements of Cinderella and Little Red Riding Hood.

Don't miss the other books in The Lunar Chronicles series:
Cinder
Scarlet
Cress
Winter
Stars Above
Fairest
Wires and Nerve Vol. 1
Wires and Nerve Vol. 2: Gone Rogue