Scarlet Grey

Scarlet Grey is the twin sister of Ivy Grey. She loves fame and luxury and wants to become a famous ballerina. She is more troublesome and more of a daredevil than her sister, and is very brave, straightforward, and not afraid to speak up for herself, though she has a short temper and a sharp tongue. She is also very clever as she hid her diary pages and made sure to leave clues for her sister to find them.

Ivy Grey]
Ivy is Scarlet's twin sister. She is up for any challenge with a little persuasion. She is Scarlet's true best friend.

Ariadne Flitworth
At the beginning of the second book, The Whispers in the Walls, when Scarlet met Ariadne, she didn't fully trust her, but by the end of the book, they were like best friends.

Edgar Bartholomew
Mr. Bartholomew had his mind set on rules which Scarlet didn't abide by. It took a nasty turn when he started trying to hide the evidence of murder he committed, and when Scarlet, Ivy, and Ariadne revealed his crime, he ended up going to jail for a long time.

Henry Bartholomew
After his father, Edgar Bartholomew was defeated, Henry came claiming that Rookwood belonged to the Bartholomews and he was going to tear Rookwood down. He became a common enemy of The Whispers then, which Scarlet was one of the founders of.

Ivy Grey
Ivy is Scarlet's younger twin sister. She also attended Rookwood.

Mortimer Grey
Mortimer Grey is Scarlet's father. He is also the husband of Ida Louise Smith and later Edith.

Sara Smith
Sara is Scarlet's maternal aunt and her mother's sister.

Phoebe Gregory
Phoebe is Scarlet's paternal aunt and her father's sister.

Book 1: The Lost Twin
The year before, Scarlet had been trapped in an insane asylum, and left diary pages full of clues for Ivy to solve and follow. In the end, Ivy rescued her from the asylum with the help of Ariadne and Ms. Finch.

Book 2: The Whispers in the Walls
Scarlet returned to Rookwood. Penelope Winchester was absolutely intent on ruining Scarlet's life by framing her for a crime she didn't commit. At first Scarlet was suspicious of Violet, but they get over their differences to save Rose. Scarlet was also fascinated by The Whispers.

Book 3: The Dance in the Dark
Scarlet auditioned for the part of Aurora in Sleeping Beauty. She got the part, which angered Penny. She was kept at Rookwood and soon discovered the full extent of the death threats and food poisoning. She performed on stage without Ivy because Ivy was defeating Ms. Fox up behind the scenes. The audience loved her. Edith, her father, and her aunts came to see the show.

Book 4: The Lights under the Lake
Scarlet was present at the midnight meetings with Ivy and Ariadne, as they tried to solve the mysteries. They were first friends with a couple of birdwatchers, until they learned they were trying to steal a lock with a key from Rose.

Book 5: The Curse in the Candlelight
Scarlet told Ariadne she should give Muriel a second chance like she gave Violet a second chance. When Ebony arrived, Scarlet was jealous of all the attention she seemed to be getting. As the book progresses, Scarlet figures out that Ebony is just a normal introverted girl, and that Muriel is the true villain. After trying to save Ariadne, they end up getting locked in a crypt.

Book 6: The Last Secret
Scarlet decides to recruit some old friends and enemies to start the Whispers up again. She and Ivy sneak into Matron's office and crack the clues protecting the safe. They are eventually able to unmask Edith and Henry Bartholomew.