Rebel by Susie McIver

Dash Bellmont swore never to fall in love again; one broken heart was more than enough. He didn’t expect someone to challenge that promise.

When he receives an email threatening his brother, he decides to use his special skills to find the bastard who sent it. After all, he did get his Delta Force nickname, Rebel, by not following the rules. Sometimes, that’s what it took to save lives.
Evie was the definition of the girl next door… until her sister went missing.
Now, she spends her time with drug addicts and the homeless, hoping to hear about anything that might lead to her sister. She’ll do whatever it takes to find her, even if it means listening to the commands of a stranger on the dark web.
Their searches bring them together, and everything changes from there.
Rebel was once a hero, and that was exactly what Evie needed. She just didn’t know it yet.