The Will Trent series takes place in Atlanta and features GBI special agent Will Trent, his partner Faith Mitchell, and Angie Polaski. The first two books in the series are Triptych and Fractured. Later, Sara Linton from The Grant County Series joins the series, and also appears in Undone, Broken, Fallen, Criminal, Unseen, and The Kept Woman, The Last Widow, The Silent Wife, and After That Night. There are also two short stories featuring Will Trent, Busted and Snatched.

From: https://www.karinslaughter.com/will-trent-series