| A | B |
|---|
| Ann M. Martin | author |
| Hattie Owen | main character, 12 years old |
| Mrs. Hagerty | has a daily beauty routine |
| Angel Valentine | unintentionally breaks Adam's heart |
| Leila Cahn | Hattie's new friend from the circus |
| Mr. Penny | ran a clock repair shop and still has many clocks in his room |
| Johathan Owen | artist |
| Dorothy Owen | Hattie's mother |
| Nana | a very proper grandmother |
| Papa | grandfather |
| Barbara Strowsky | her husband died and she moved her family to Millerton |
| Catherine | new friend who moves into the guestroom |
| Betsy | best friend who spends her summers in Maine |
| Adam | a new found uncle who faces many challenges |
| Hayden | Mother's brother who seldom visits Millerton |
