How different Mitchell's life would have been if he'd refused Herrick's offer. If he hadn't killed Arthur Hanley afterwards. He'd survived four weeks without feeding, and then he'd succumbed, targeting one of his friends to be his first victim.
He sighed. He never wanted to dredge all of this up again. The only saving grace from his side was that he wasn't reliving it quite so intensely since he was apparently living through Kate's memories. But that meant Kate was dealing with his memories as real and vividly as if they were her own.
And that wasn't okay. He'd lived a difficult, and often very bloody life. He wasn't deliberately keeping the reality of his escapades as a vicious killer from her, she knew what he was and presumably what he was capable of. But this was no way for her to find out the details, the truth of just how vicious and violent Mitchell had been all the years he'd run around with Herrick.
"I'm sorry you have to deal with this. I wish I knew how to make it stop." Because there was a lot of pain, a lot of blood, a lot of sadness in Mitchell's life, and very little happiness to temper it all.