- Peter Debree: The protagonist of the story. He is an impressionable young man who is trying to find his place in the world.
- Mrs. Emily Gaylord: A wealthy widow who is Peter's confidante. She is a kind and understanding woman who offers Peter advice and guidance.
- Marcia Gaylord: Mrs. Gaylord's daughter. She is a beautiful and intelligent young woman who is Peter's love interest.
- Herbert Halsey: A wealthy young man who is also in love with Marcia. He is a rival to Peter for Marcia's affections.
- Mr. Halsey: Herbert's father. He is a wealthy businessman who disapproves of Peter and his relationship with Marcia.