I read this book as a serial from the author. It is a fast enjoyable read.
Julie's father has just died, and she and the man she grew up with, have inherited his company. Mitch came to live with Julie and her father when he was twelve after his parents were killed in an accident. Mitch adores Julie and would do anything for her.
Hayden is a genius, who grew up in the foster care system, practically raising himself, as his genius was beyond the "normal" people in his orbit. He went to college young, started his company and found a friend and mentor in Julie's father. And he comes forward to offer support, friendship and advice.
When researching old files of her father's, Julie finds a reference to a program that she has no knowledge of, and the more information she seeks, the less she can find. And when a bomb explodes in her father's wing of the house, the timing is suspect.
As Julie adjusts to her new life, she remembers her relationship with Mitch and wants more, but she is also attracted to Hayden, and in the aftermath of the bombing she reaches out to both men. She knows what she wants but are Mitch and Hayden willing to share her. Mitch and Hayden will need to make that determination and there is still a threat in existence that must be discovered and stopped.