Irish sorcerer Hoyt Mac Cionaoith tried but failed to destroy Demon Queen Lilith after she ruthlessly turned his twin brother, Cian, into a vampire. Lilith gradually recovered and immediately set about amassing an army of vampires with the intention of destroying all humans so that she could rule the world. The goddess Morrigan chooses Hoyt and five others to stop Lilith, sending Hoyt 1,000 years into the future. In twenty-first-century New York, he starts to build his team, enlisting Glenna Ward; his brother, Cian; and Cian's employee, King. Traveling back to Ireland, the three pick up new recruits Moira and her cousin Larkin, both of whom have traveled through space and time from the Kingdom of Geall. Demon-hunter Blair Murphy is the last to sign on to the circle of six. Now a sorcerer, a witch, a warrior, a scholar, a shape-shifter, and a lost soul must find some way of working together as a team if they are to have any hope of stopping darkness from overcoming all that is good and light in the world.

Valley of Silence is the third and final book in The Circle Trilogy by Nora Roberts. This fantasy novel follows the story of six people who come together to fight against an evil vampire queen and her army. The book is authored by Nora Roberts and published by Berkley. The book is perfect for fans of fantasy novels and those who enjoy reading about epic battles between good and evil.