"What the fuck, Lucy?" Mack growled at her after they'd been driving for a few minutes. He was clearly fighting with anger.

"I don't understand why it's such a big deal for me to take your dad to his appointment tomorrow, Mack," Lucy said gently, turning her body towards him. "He doesn't seem to mind, and Tawny thought it was a good idea. This'll give me a chance to get to know him better."

Mack shoved a frustrated hand through his blond hair, spiking it up at odd ...