| | | | Part One: Intuition |
| | Susanna | Owens | Mother of the children with special abilities. |
| | Boston | Owens | An old, respectable, but cursed family. |
| | Maria | Owens | Original ancestor of Boston Owenses. |
| | Frances | Owens | Susanna's eldest child. Can communicate with birds. |
| | Bridget | | Gifted girl who can read minds. Susanna's youngest child. |
| | Vincent | | Susanna's only son. A gifted child. |
| | Haylin | Walker | Frances's only friend. |
| | Thomas | Paine | Founding Father of the United States. |
| | Franklin | D. Roosevelt | The U.S. President. |
| | | | The Magus - The Occult Handbook. |
| | Cotton | Mather | The New England puritan master. |
| | John | Hathorne | The infamous and cruel judge. |
| | Dr. James | Owens | Susanna's wife. Father of Frances, Bridget, and Vincent. |
| | Isabelle | Owens | Susanna's aunt. |
| | Maggie | Owens | One of the Owens who defamed the Owens name. |
| | Wren | | One of Isabelle's kittens. |
| | Ramblin' Jack | Elliott | An American singer. |
| | April | Owens | The Owens's child cousin. |
| | Mary | | The Owens's long-suffering housemaid. |
| | Mrs. | Russell | The Owens's neighbor. |
| | Grimoire | | A collection of book of shadows. |
| | Jack | | The Blond boy. A neighbor of the Owens. |
| | Reverend | Willard | The Reverend. |
| | Levi | Willard | Reverend Willard's son. Jet's friend. |
| | | | Part Two - Alchemy |
| | | | Alchemy Tree - A 500-year-old tree near The Ramble. |
| | Frederick | Law-Olmsted | An American landscape artist. |
| | Senator | Kennedy | Senator from Massachusetts - won Presidential elections. |
| | Henry | | Owens's family cook. |
| | Matthew | Hopkins | The witch-finder general of England. |
| | Charlie | Merrill | Isabelle's handyman. |
| | Elizabeth | Taylor | An American-British actress. |
| | Pete | Seeger | A folk singer. |
| | Lewis | | Frances's pet bird. |
| | Augustus | S. Gaudens | The Sculptor. |
| | Regina | Owens | April's daughter. Aka: Reggie. |
| | Kathy | Stern | NymphoBank.leptomaniac patient of Dr.Burke-Owens. |
| | Aaron | Burr | A man who changed the course of the stream. |
| | Rose | Butler | Woman hanged for burning down her master's house. |
| | | | Part Three - Conjure |
| | Edna | St. V. Millay | A Poet. |
| | Edgar Allan | Poe | An American writer. |
| | Rafael | T. Correa | A student in Hunter College. |
| | | | San Remo - The Hangouts of Poets. |
| | Dave Van | Ronk | The best guitar teacher in New York. |
| | Harry | Houdini | The famous illusionist. |
| | William | Grant | Vincent's new companion. A history professor. |
| | Matthew | Grant | A man who was acquitted in Windsor for trying witchcraft. |
| | Emily | Flood | Haylin's friend. |
| | | | The Sorcerer's Apprentice - Van that goes cross-country. |
| | Edward | Eager | The Author of Half Magic. |
| | | | Part Four - Elemental |
| | Lou | Adler | A record producer. |
| | Resign | Willard | Deceased. |
| | Nathaniel | Hawthorne | An American novelist. |
| | Ethan | Walker | Haylin's father. |
| | Lila | Walker | Haylin's mother. |
| | Melville | Flood | Emily's father. |
| | Margot | Flood | Emily's mother. |
| | Everett R. | Grant | William's ancestor. |
| | Alan | Grant | William's father. |
| | Edgar | | The stuffed heron. |
| | Jonas | Hardy | The Owens's family lawyer. |
| | | | Part Five - Gravity |
| | Agnes | Durant | The woman who made a funeral arrangements. |
| | Django | Reinhardt | A brilliant musician. |
| | Pauline | | Dr. Walker's nurse. |
| | | | Part Six - Remedy |
| | Sally | Owens | Regina's daughter. Gillian's sister. |
| | Gillian | Owens | Regina's daughter. Sally's sister. |
| | Arthur | | Gillian's stuffed bear. |
| | Pip | | Gillian's toy mouse. |
