In the 1920s, the discovery of oil transformed the Kiowa tribe of Oklahoma into some of America's richest people. Luxury cars, lavish mansions, and a European education—the press dubbed them the "Oil Princes." But behind this glamorous facade, a sinister plot unfolds.

Tribune members are murdered one by one under mysterious circumstances. Elders are poisoned, gunshot victims are shot, and women disappear—with local police either helpless or complicit. As the body count mounts, a young federal investigator, John Harper, arrives with a small undercover team to uncover the truth.

Harper uncovers a web of greed and betrayal: white businessmen, lawyers, and even some tribal elders conspire to seize oil lands through murder, manipulation, and forged contracts. The killers believe they are untouchable—but Harper uncovers hidden survivor testimonies, buried in metal boxes, that hold the evidence that might bring the perpetrators to justice.

As Harper and his team confront the powerful Ramseys and rally the city and tribe against them, the battle for justice turns into a tense, high-stakes war of morality, courage, and survival.

"Blood Beneath the Oil" is a gripping historical thriller about greed, corruption, and the price of silence, where every barrel of black gold is drenched in the blood of innocents.