Dad's best friend. The one man Katelyn's not supposed to want. Katelyn is supposed to be focused on her studies, but tension neither of them can ignore is making one thing painfully clear: some lines are impossible not to cross. Every room feels smaller whenever Frank Castle is in it. Every look feels like a secret. Every moment alone feels like a mistake they're both tempted to make. She knows they can't, he knows they can't. But knowing something is forbidden doesn't always make the feelings disappear. Sometimes, it only makes them harder to resist.