Nancy's widowed father, a distinguished local lawyer who supports and assists Nancy in her investigations while showing concern for her safety.

The Drews’ caring housekeeper, who has a maternal interest in Nancy's well-being and occasionally offers helpful insights in her detective work.

A recently deceased wealthy man whose eccentric decision to hide his will sets off a series of events, impacting the lives of those he intended to benefit.

An elderly cousin of Josiah Crowley’s wife, who lives in poverty and plays a crucial role in the unfolding of the mystery surrounding the missing will.

A playful five-year-old girl who initially draws Nancy into the story’s central mystery after Nancy rescues her from a stream.

Edna and Mary, Judy’s great-aunts, who care for her after her parents’ tragic accident and struggle financially as seamstresses.

Allison and Grace, orphaned siblings who run a farm and were close to Josiah Crowley, hoping for a chance at a better future through his promised inheritance.

Fred and William, two lifelong bachelors who run a fruit farm and were former suitors of the Turner sisters, sharing ties with Judy’s family.

Ada and Isabel, social-climbing former classmates of Nancy, who are anxious about their family’s claim to Josiah Crowley's fortune.

An arrogant couple focused on social status and wealth, who tried to secure Josiah’s inheritance for their own benefit.