Ace by Marie James

It’s not hard to see how weak love makes a man.
He watched that love flow from his best friend’s body, the crimson flowing out around him like a river.
If love leaves you on the business end of a knife, then he has no interest.
And that’s how Eddie “Ace” Yarrow has lived his life in the last ten years: independent and alone.
But honestly, it goes back further than that.
He left Cerberus over thirty years ago because he wanted to make a difference closer to home.
And although he made great strides in his career, a man always tends to go back to his roots.
His forced vacation from ICE has left him working a job for Cerberus.
Cora Preston isn’t trying to make his life harder, but she doesn’t understand why they’re not getting results.
Cerberus is taking too long to find her missing sister, and inserting herself into the investigation is her only choice.
The two butt heads more than once, and neither of them can predict just how close together this investigation is going to bring them.