The apple functions as a symbol of temptation, irreversible choices, and the sealing of a fateful pact. It directly alludes to the biblical story of Adam and Eve, in which eating the forbidden fruit—often depicted in later tradition as an apple—ushers humanity out of Eden. In the novel, Cate’s acceptance of the apple likewise represents a step into a new, perilous reality, echoing the biblical warning that once a boundary is crossed, it cannot be undone.

The apple also draws on a wider tradition in myth and folklore where fruit serves as an object that bridges worlds or binds the eater to a new realm. In Arthurian legend, the legendary isle of Avalon exists at the threshold between mortal life and the otherworldly, and its name derives from the Old Welsh for “apple island.” Similarly, the Avalon Hotel in the novel is a liminal space where the human and fae worlds meet, and it is here that Lachlan offers Cate the apple. In Irish folklore, mortals who eat the food of the other realm are unable to return home, and in Greek mythology, Persephone’s consumption of the pomegranate seeds binds her to the underworld for part of each year.

In Filthy Rich Fae, the apple marks Cate’s transition from the human world into the dangers and enchantments of the Otherworld. Lachlan is eating an apple when he and Cate first meet, immediately casting him in the role of a tempter offering a perilous exchange disguised as a simple transaction. The symbol reaches its full potency when Cate, desperate to save her foster brother, agrees to trade her soul for his life. Lachlan seals this magical contract not with a signature, but by tossing her an apple and commanding her to eat. Her bite into the fruit is a physical act of acceptance, transforming a verbal promise into an unbreakable, magical bond that transports her to the Otherworld. Lachlan cements their connection by taking the apple back and sinking “his perfect white teeth into the bite [she]’d just taken” (28). This act of sharing the fruit symbolizes that her fate is now intertwined with his; they have both partaken in the deal that binds them.

The novel’s dedication, “To the readers who would take the apple” (ix), broadens the symbol’s reach, inviting readers to see themselves as potential participants in such bargains. The novel invites them to willingly enter a dangerous and seductive new world, fully aware of the potential consequences.