FBI Special Agent Julia Rossi returns to Clementville to investigate signs of criminal activity linked to a case she's struggling to leave behind. After losing her fiancé to infidelity and her partner to prison, trust has become a foreign concept. Can she trust her job, her instincts, or even her faith?

Carpenter Eli Reno isn't thrilled when his exploration of the tunnels underneath Clementville not only uncovers evidence of recent criminal activity but also forces him to work alongside the woman who broke his friend's heart.

As the two explore the dark tunnels, Eli battles his anger over his friend's betrayal, while Julia fights to regain her footing in a world full of broken trust. But in the depths below, can they learn to rely on one another-and on God-to uncover the truth and find healing in each other's hearts?