Sarah Filmore (b. 1751) is an Irish teenager living in Collinsport in the year 1767. She meets and falls in love with Tom Cunningham, who has traveled from the future. Sarah greatly resembles Tom's friend, Jackie Tate, except her hair is auburn in color. Sarah is originally from Ireland, and lost most of her family at sea.
Sarah and Tom were separated when he returned to his own time, and she spent the rest of her life finding other time-travelers.
Sarah is portrayed by Alexandra Donnachie.