Beneath its horror story, the film contains a strong moral and religious framework. Katie represents innocence, compassion and guidance, while Jack Ferriman represents temptation, corruption and spiritual destruction. Their conflict is not simply about survival, but about the fate of the souls aboard the ship.

The Murals and Dante

Murals inspired by Gustave Doré’s illustrations of Dante’s Divine Comedy appear throughout the Antonia Graza. Images such as Charon ferrying souls toward the underworld visually echo Ferriman, whose very name suggests a “ferryman” collecting souls.

Katie serves as his opposite. Actress Julianna Margulies compares Katie to Virgil in Dante’s Inferno—A “little guide” leading others through the hell of the ship. Katie also resembles Dante’s Beatrice in her guidance rooted in compassion and moral restoration rather than fear.

One memorable scene places Katie directly in front of the Charon mural as she innocently hums and twirls. The contrast visually captures her role: A child whose goodness remains intact even while surrounded by death and corruption.

The Heart Locket

Katie’s heart-shaped locket contains photographs of her parents and bears the image of a dove, a traditional symbol of peace, innocence, hope, and spiritual deliverance.

After Epps discovers Katie’s remains, she begins wearing the locket herself. Its transfer can be read as a symbol of trust and moral connection between the two characters. Epps wears it through the remainder of the film, suggesting Katie’s influence remains with her even after the souls aboard the ship are freed.

Innocence, Sacrifice and Forty Years of Trial

Katie suffers because of the evil choices of others, yet she refuses to respond with hatred or retaliation. Instead, she spends forty years trying to protect strangers from suffering the same fate.

Within a Judeo-Christian reading, the number forty traditionally suggests a period of testing and endurance followed by deliverance. Katie’s decades of captivity therefore resemble a prolonged spiritual trial which finally ends when the ship is destroyed and its imprisoned souls are released.

Free Will and the Marked Souls

Ferriman tempts people through greed, lust and selfish desire, but the story emphasizes that people ultimately make their own choices. Those who surrender to corruption become “marked” and fall under his control.

Katie represents the opposite principle. She does not force anyone to follow her; she warns them and reveals the truth, leaving them free to respond. Epps survives because she is willing to listen, believe and act upon what Katie shows her.

The Power of a Child

Katie’s youth appears to make her powerless, yet her innocence is precisely what Ferriman cannot control. The smallest and most unassuming person aboard the ship ultimately becomes his greatest obstacle.

This reflects the Judeo-Christian theme where humility and childlike faith can possess a strength overlooked by worldly power. Katie does not defeat evil through force, but through courage, compassion, truth and her refusal to become corrupted by what surrounds her.

Sacrificial Love

Ferriman believes people are fundamentally unworthy, selfish and can always be controlled through misaligned desire. Katie and Epps challenge this worldview through their willingness to risk themselves for others.

Katie repeatedly endures Ferriman’s hostility while trying to warn strangers, while Epps ultimately risks her own life to destroy the ship and free its captive souls. In this reading, the true “treasure” of the story is not the gold aboard the Antonia Graza, but the sacrificial love demonstrated between two people who choose to put others before themselves.