A psychologist whose professional and personal life unravel as he attempts to uncover the truth about Grace, revealing his own internal conflicts with societal expectations and personal desires.

Grace's close friend and mentor, whose practical and outspoken nature, coupled with aspirations for a better life, leave a lasting impact on Grace after her untimely death.

The housekeeper and mistress of Thomas Kinnear, Nancy employs Grace and becomes a significant figure in her life, though her self-interest and social situation complicate their relationship.

A disgruntled and volatile employee in the Kinnear household, whose animosity towards Nancy and subsequent actions significantly affect the lives of those around him.

A wealthy and liberal employer who engages in a controversial relationship with his housekeeper, Nancy, and whose actions and status shield him from society's judgment.

A Methodist minister and reformer who supports Simon's investigation into Grace's case, believing in her innocence and working towards her pardon.

A peddler with a fluid sense of identity, offering Grace unconventional opportunities and embodying themes of self-construction and defying societal norms.