Into Thin Air — Karen Leabo

WITHOUT A TRACE

Their disappearances had haunted Detective Caroline Triece for longer than she cared to remember--young girls in trouble who had simply vanished. She'd known with chilling certainty that something was very wrong, and now she had the terrible proof--the cold, lifeless body of a girl who had just given birth ....

There was no room in her life for anything that came between her and her work--and that definitely included her disturbing new partner. It wasn't simply that Austin Lomax didn't share her obsession with this case. The real problem was that he was awakening feelings that she had thought were long dead...