After the big blow up of the Rabbit Hole, the Richters have remained under the radar, but there is no doubt that they'll return. Daire is sure of this. Daire and Dace are towards the end of their training and possibly their lives. Daire is basing her life on a dream she has had that predicts the end of everything between her and Dace. With her grandmother gone, Daire feels as though she is missing an important piece of the puzzle. If Daire doesn't listen to her true self and rely on her training, the Upper, Middle, and Lower worlds will be devastated and sent into darkness.

Dace knows exactly what he needs to do to put an end to his family and rid the town of Enchantment of the evil the Richters have created. The beast within him is urging to take control. The darkness is yearning to extinguish the light. Dace knows it's coming, and he will do anything to protect Daire from it, even if that means walking away from her.

The Richters have begun rebuilding the Rabbit Hole, and it's no secret how powerful they're making it. They will do absolutely anything to keep the Richter lineage going and that includes tourmaline gems. The same gem that killed Daire's grandmother, Paloma. These gems not only have the power for the Richters to control and track the receivers, but a deeper power Daire has figured out.

When Cade leaves invitations to the Masquerade Ball at the Rabbit Hole on her doorstep. He has also left her a mask and a dress, which looks exactly like the one from her dream. Now the battle has begun, Daire must see this through, even if it means her death, in order to save those she loves and cares about.

Told in several different viewpoints, this story is based on love and how love can conquer all. Soul Seekers is a series that it is mandatory to read in order. There is so much that is covered in each book of the series, you simply will not be able to follow any of the others if you don't start at the beginning. Although the series spans a period of under two years, as readers, we get to watch the emotional whirlwind that Daire and Dace face throughout this series. Each book seems to tear them apart, but ultimately, they end up finding their way back to each other.

I absolutely love this series. The characters are wonderfully complex and the plot is entertaining. I am sad to see the series come to an end, but the ending of HORIZON makes me think that Alyson Noel isn't quite finished with it. Perhaps we will see a new series based on this one in the future.