Abbie Mills to battle the Headless Horseman and apocalyptic forces. Abbie Mills is an original character created for the series, not a race- or gender-swapped version of any established figure from the source material, and the same holds for Captain Frank Irving and other supporting roles.

The core premise revolves around biblical Witnesses, witches, and monsters-of-the-week drawn from colonial history and folklore, with no central focus on identity politics, systemic oppression, or critiques of traditional norms. The series integrates its diverse original characters organically into the modern small-town setting without altering source canon, allowing the narrative to prioritize supernatural mythology, historical flashbacks, and personal stakes. Creator intent centered on entertainment and broad appeal through an updated legend rather than activist messaging or external mandates, resulting in a show that delivers straightforward genre thrills without injecting social lectures or ideological framing into its plot points or character arcs.