Cal is a 50-year-old retired police officer from Chicago who relocated to the rural Irish town of Ardnakelty. He spends his retirement fixing furniture and has naturally assumed a fatherly role toward local teenager Trey. When Trey's biological father returns with an Englishman in tow, Cal recognizes the threat and steps out of his quiet routine to protect his surrogate daughter from manipulation.

Theresa "Trey" Reddy is a 15-year-old girl living in the isolated mountain area outside Ardnakelty. Rejecting traditional expectations, she prefers doing carpentry work with Cal and roaming the hills with her dog. She harbors deep anger over the unsolved disappearance of her older brother Brendan and views her father's sudden return with intense suspicion and resentment.

Johnny is Trey's absentee father who recently returned to Ireland from London. He has a well-known reputation in town as a swindler and relies heavily on his natural charisma to manipulate others. He brings a dangerous associate to Ardnakelty and pitches a scheme about buried gold, viewing his family primarily as tools for his financial gain.

An Englishman who travels to Ardnakelty to partner with Johnny in a scam targeting the local townsfolk. He wears a gold ring and weaves a convincing story about his ancestral ties to the area to exploit the residents' desire for wealth. Beneath his polite stories, he operates as a dangerous criminal who uses violence and intimidation to collect his debts.

Lena is Cal's girlfriend and a lifelong resident of Ardnakelty. Unlike the majority of the townspeople, she values her privacy and actively distances herself from the local rumor mill. She understands the unspoken social rules of rural Ireland and frequently advises Cal on how to manage the town's shifting moods.

Trey's mother who lives in harsh conditions in the mountains outside town. Since marrying Johnny, she has faced complete ostracization from the Ardnakelty community. Though she appears passive and rarely speaks out against her husband, she remains acutely aware of the danger he brings to their children.

An older resident of Ardnakelty who acts as an informal leader among the local men. He frequently visits the pub and keeps a close eye on town affairs. Though fully aware of Johnny's history of cheating people, he entertains the gold scheme out of boredom and a desire for easy wealth.

Trey's older brother who left home to find work six months before she started spending time with Cal. His unsolved death deeply traumatizes Trey, and her inability to find his unmarked grave fuels her intense resentment toward the townspeople.

A police detective assigned to investigate serious criminal matters in the Ardnakelty area. He carefully observes the locals and relies on Cal's law enforcement background when trying to untangle the town's shifting stories and alibis.

Lena's sister who helps run the local shop in Ardnakelty. She stays highly informed about town gossip and regularly passes information to Lena regarding how the community perceives Johnny's schemes and Cal's involvement.

Noreen's mother-in-law, representing the older generation of Ardnakelty residents. She serves as a reliable source of truth regarding local history, specifically dispensing facts that contradict the modern rumors of gold in the mountains.

Noreen's husband and the owner of the local shop, which serves as a central hub for town interaction and the rapid spread of rumors regarding Johnny's return.

Trey's loyal dog who constantly runs by her side through the harsh mountain terrain. He provides Trey with silent companionship and alerts her to changes in their isolated environment.

One of Trey's younger sisters living in the crowded Reddy household. She experiences the instability and noise of their isolated mountain home, directly impacted by her father's sudden return.

Trey's younger brother. He witnesses the late-night disturbances and underlying threats directed at his family's home in the mountains as the town's anger grows.

One of Trey's younger sisters. She lives in the chaotic environment of the Reddy mountain house and deals with the sudden reappearance of their absentee father and the trouble he brings.

Lena's deceased husband who died a few years prior to the events of the story. His reluctance to leave Ardnakelty kept Lena in the town despite her early dreams of moving to Scotland.