Ace’s Wild by Em Petrova

When Rainey chooses a remote path for her daily run, she never thinks she’ll become a witness to a dark crime that kicks her into turbo-speed as she tries to get away. But there’s no escaping the Hell’s Sons. They know everything—including who she is and where to find her. When the huge, frightening biker turns up on her doorstep and demands she come with him so he can keep her safe, she has no choice but to go if she values her life.

Ace has been dealing with a twisted group of men who enjoy torturing women. And the biker gang he belongs to has finally eliminated one. Too bad there was a witness, and now she’s in danger. The Hell’s Sons need to keep her quiet while the enemy wants her to talk. So Ace is charged with a new ward. Only babysitting a gorgeous woman with toned legs for miles is becoming more of a chore than he first thought. Especially when she seems to feel that same burning need that he does. When even his dog approves of her, what’s a man to do but to give in?
…or was it?