With a financially successful career, Lily Montague's days of needing help were behind her. That is, until her seven-year-old daughter was suddenly in danger and needed protection, in the Georgia mansion where Lily grew up – and thought she'd never return to again. As a Christian, FBI special agent Kevin "Mack” MacCormack wasn't happy with undercover assignments, but his current one had him masquerading to protect a little girl. The first time little Abigail called him her "guardian angel,” he knew he'd do whatever it took to keep her safe. That meant dealing with her protective, stubborn – and beautiful – mother, Lily, whom he somehow could not stop thinking about....