Every seven years, on the seventh day of the seventh month, strange things happen, and three friends–Caleb, Fox, and Gage–must battle against evil with the women who love them by their sides.

Blood Brothers by Nora Roberts is the first book in the Sign of Seven Trilogy. This gripping novel tells the story of three childhood friends who, after witnessing a terrifying event in their youth, find themselves bound together by a powerful and dangerous force. As they grow older, they must confront the evil that haunts their town and discover the truth behind the Sign of Seven. With its thrilling plot, engaging characters, and expert storytelling, Blood Brothers is a must-read for fans of Nora Roberts and supernatural suspense.