W. B. Yeats’ poem "The Two Trees", which references broken glass, appears in the beginning of the book, and is the inspiration for the title.

The main theme of the book is that the perceived heroes can sometimes be evil in their actions and the villains can sometime have good sides.

The novel was an ALA Quick Pick and called “an action-packed thriller” by Booklist, who also wrote that Atwater-Rhodes "owns a readable prose style and a vivid imagination."

School Library Journal said that “readers will be swept away by the seductive world of good and evil and find themselves lusting for a few more chapters.” The book is set in Acton, Massachusetts, the neighboring town to the author’s hometown of Concord, and follows the story of Sarah Tigress Vida, youngest daughter in a long line of vampire-hunting witches who see the world in a good-evil paradigm in which if you are not with them then you are against them.

As Sarah’s friendship with Christopher begins to turn into something more, she is forbidden to see him by her domineering mother, Dominique.

After intense internal debate Sarah decides to reveal her identity to Christopher and a wall appears between them.

Adianna shows up and attempts to rescue Sarah but finds her-self unable to defeat Nikolas.

Nikolas uses Adianna as a hostage for Sarah to surrender all her weapons (which are the only way for her to use her magic to kill vampires).

She refuses to stay with them because she can't follow their trail of killing people every time she feeds.

The Vida line specializes in offensive magic skills and physical combat for the purpose of hunting vampires.

Sarah was raised from a very young age to kill vampires, however she has problems staying unemotional.

He and Kristopher are also known for carving their names into the skin of their victims and bloodbonds (humans bounded to a vampire).

He was born around 1830 as Nicolas, but was turned into a vampire by his sister, Nissa, after he murdered a girl named Christine.

He and Kristopher are also known for carving their names into the skin of their victims and bloodbonds (humans bounded to a vampire).

Caryn belongs to a group known as Single-Earth which is a peaceful collective of vampires, witches, shape-shifters and humans.

He also has many bloodbonds (humans bounded to a vampire), including his favorite, Heather, who he's had for three hundred years.

He carved his name into her arm, however, using vampiric powers, Christine felt no pain.

At the point, Nikolas got angry because humans with a family aren't supposed to be invited to a vampire bash, and told Kaleo to get rid of her.

Kaleo drank her blood, injured her, bloodbonded her, and left her in a middle of a front yard, all without Nikolas's knowledge.

Because of this experience and Kaleo continuing to secretly drink blood from her, Christine is mentally scarred.

Seeking revenge, her younger brother, Robert, attempts to become a vampire hunter.