Cutting the Track - Kat Voyzey Mysteries, #4

"My name is Kat Voyzey, and I am made up of one-third caffeine, one-third bone and muscle, and one-third crippling self-doubt. As the caffeine fades, self-doubt rushes in to fill the empty places."Six months ago, Kat Voyzey quit her job at Holy Heart Medical Center to become an independent private investigator. Now, as the owner of Voyzey Investigations, she's ready to make the world a better place, one satisfied client at a time.
That was the plan, at least. But the life of a PI is far grimmer than she expected. Her clients are dodgy as hell, the work is depressing, and her temper is getting her into trouble left and right. She left a steady paycheck behind, for this?Kat's ears perk up when she hears about Haley Green. The college freshman disappeared from her bedroom early one morning, and no one's been able to find her. Elated at the prospect of a real missing persons case, Kat jumps in to track her down.
But from the very start, none of the stories line up. Everyone swears they want the missing woman found. But if that's true, why are Haley's roller derby teammates playing defense against the truth?