Nate is a disgraced litigator and recovering alcoholic seeking treatment for the fourth time in a decade. Facing tax evasion charges and bankruptcy, his legal career is in shambles. He accepts an assignment from his former firm to find a missing heir in Brazil, viewing the trip to the Pantanal wetlands as a necessary escape from his failures and the upcoming holidays.

Nearing 80 years old, Troy is a reclusive, eccentric billionaire who lives in Washington, DC. He despises his three ex-wives and six children, viewing them as greedy vultures waiting for him to die. He uses his vast wealth to manipulate his family, orchestrating a complex scheme with a holographic will to deny them his fortune and cause maximum chaos.

Rachel is the unknown daughter of Troy Phelan Sr. and a Christian missionary living in the remote wetlands of the Brazilian Pantanal. Deeply committed to her spiritual calling, she provides medical and spiritual care to the local population. She changed her name to distance herself from her past in the United States and has no interest in her father's wealth.

Josh is Troy Phelan Sr.'s trusted lawyer and confidant. Tasked with executing Phelan's shocking final testament, Josh handles the legal fallout in Washington, DC. He dispatches Nate to South America to locate the newly named heir, balancing his duty to his deceased client with his concern for Nate's recovery.

Jevy is a good-natured, 24-year-old river guide in the Pantanal who assists Nate in his search. Resourceful and deeply knowledgeable about the wetlands, he follows in his late father's footsteps as a river pilot. He relies on local connections to travel safely through the region and keeps a close eye on Nate's well-being.

Snead is Troy Phelan Sr.'s longtime personal servant and gofer. Having devoted 30 years to his employer's every whim, he feels profoundly slighted by his exclusion from the final will. Seeking revenge and financial gain, he offers his falsified testimony to the highest bidder among the family's lawyers.

Hark is Rex's ambitious and opportunistic lawyer. He sees the contested Phelan will as a chance for massive personal profit and attempts to orchestrate the family's overall legal strategy. He routinely places his own financial interests above ethics, pushing for a high-profile legal war.

The ambitious judge overseeing the Phelan will dispute. He is acutely aware of the case's high profile and secretly anticipates the ensuing media spectacle, hoping the long trial will bring him public attention.

A local lawyer in Corumbá, Brazil, who coordinates Nate's search efforts on the ground. Pleasant and content with his life, he provides essential logistical support, hiring boats and pilots for the dangerous expedition.

Jevy's young deckhand and assistant. He helps manage the boat, supplies, and communications during the dangerous journey into the Pantanal.

One of Phelan's sons with his first wife, Lillian. Heavily in debt and prone to poor financial choices, he decides to go by Troy Phelan Jr. and immediately begins spending recklessly upon his father's death, assuming a massive inheritance is imminent.

Phelan's son with Lillian. He funds an extravagant lifestyle through a string of strip clubs but currently faces a criminal investigation over a failed bank. He hides his assets in his wife's name to avoid legal trouble.

Phelan's daughter with Lillian. Once her father's favorite child, she struggles with a history of severe drug addiction, arrests, and multiple marriages. She relies heavily on her aggressive lawyer to protect her interests.

Phelan's daughter with Lillian. Like her siblings, she is heavily in debt, unemployable, and deeply invested in fighting for her father's fortune to solve her problems.

Phelan's daughter with his second wife, Janie. Married to a man whose family pretends to have old wealth, she desperately needs her inheritance to maintain their upscale facade and purchase expensive real estate.

Phelan's 14-year-old son with his third wife, Tira. Already possessing a juvenile criminal record for shoplifting and drug possession, he ignores his education and plans to use his inheritance to start a rock band.

Troy Phelan Sr.'s first wife. She raised four of his children and privately celebrates his death, eager for the financial windfall to solve her children's massive debts.

Troy Phelan Sr.'s second wife, 22 years his junior. Estranged from her ex-husband, she stays far away from the immediate family drama while waiting for the legal dust to settle.

Troy Phelan Sr.'s third wife, 41 years his junior. She largely abandons her teenage son to the care of expensive lawyers while she travels with new romantic interests.

The South American Missions' coordinator for World Tribes. She is the only person who knows Rachel Lane's true identity and carefully guards her privacy, communicating via mail only twice a year.

A church rector who befriends Nate O'Riley. He provides a welcoming ear and spiritual guidance, putting Nate to work renovating the church basement to help him stay grounded.

Nate's counselor at the Walnut Hill rehabilitation facility. He remains deeply concerned about Nate's sudden departure, knowing that his patient is highly vulnerable to relapse.

Libbigail's lawyer, who previously represented her in a divorce. He is eager to protect his own financial interests in the Phelan estate battle and carefully guards his access to his client.

An associate at Josh Stafford's law firm. He assists Josh in handling the complex legal research and logistics surrounding the Phelan will.

A Brazilian pilot who flies a weathered single-engine Cessna. He is persuaded by extra money to fly Nate and Jevy over the Pantanal, despite his severe reservations about the gathering storm.