Lucifer & Beckett
As Lucifer explained the story to her, Kate did her best to keep her face neutral. Sure, she didn't have the devil himself rising up from hell and deciding to solve cases with her, but she did have a mystery writer who had inserted himself into her life and her work and used his out of the box thinking to great effect for arresting murderers.
But when the story turned to his sacrifice to save someone else, she pressed her lips together, fighting a losing battle with a small smile and a knowing glint in her eye. There were some things in life that were undeniable, and putting your life on the line for someone else, that usually meant something. "She must be important if you were willing to kill yourself to save her," Kate said, that same sparkle of knowledge in her eye as she took another drink.
Her glass was only halfway empty but at his next question, she tipped the rest of the contents into her mouth, swallowing the liquid and immediately signaling the bartender. If they were going to have this conversation, wine wasn't going to cut it. She needed something stronger. "Scotch neat."
"For being incredibly stupid," Kate replied, the happy little twinkle in her eye burning out to replaced by complete misery. "The man who killed my mother, who I arrested and was sentenced to multiple life sentences, had a business partner and through a series of strange events I was made aware of it. That man killed former co-workers of mine, friends of mine who were given information that I had requested years ago and I decided to go after the man, to make him pay for what he did."
"And in doing that, I left my husband," she said with a frown, "He would have become a target for these people if they found out I was investigating, and I couldn't let him be killed because of my personal vendettas. So I packed a bag, told him I needed a break, and I left. I broke his heart because I put an investigation before my marriage."