as David Walker: A man struggling with the profound hurt and confusion following his wife's infidelity.

The film features a strong ensemble cast, including early performances by now-famous actors:

as Chet Becker: The teenager whose presence acts as a catalyst for the couple's unraveling.

Reviewers noted the film’s "idealized New Jersey suburb" setting, which serves as a stark contrast to the dark emotional undercurrents of the story.

The story centers on (Simon Baker), a high school history teacher, and his wife Elaine (Frances O'Connor). The couple appears happily settled in a quiet college town until they meet Chet Becker (Gregory Smith), a lonely 15-year-old boy working at a local ice cream shop.

What begins as a friendly mentorship quickly spirals into an emotional and sexual entanglement. Chet develops an intense crush on Elaine, leading to a one-night stand that shatters the couple's relationship. The film focuses heavily on the aftermath of this betrayal, as David and Elaine are forced to confront the hidden cracks in their marriage and the reality of their own complacency.

as Elaine Walker: A woman whose momentary lapse in judgment destroys her domestic stability.

"Book of Love" premiered at the in January 2004. Critics and audiences often describe the film as "daring" but "unsettling" due to its treatment of sexuality involving a minor.

While the script received mixed reviews for its pacing and "theatrical contrivances," the lead actors were praised for their ability to convey complex emotions like denial and regret.