Anna's husband, a New York businessman involved in her pregnancy journey who maintains emotional distance and a secretive personal life. His actions reflect traditional expectations placed on male partners in relationships.

Anna's best friend and a well-known actress who offers emotional support and guidance. Siobhan's mysterious background and influence on Anna's life contribute significantly to the plot.

A former surrogate with a mysterious past tied to unexplained pregnancy symptoms. Her investigative efforts complicate the lives of other characters as she seeks answers and attention for her work.