Hope Cahill was born in the year 1960, to Grace Cahill and Nathaniel Hartford, and grew up in Attleboro, Massachusettes. She married Arthur Trent in 1992, and had two children with him: Amy Cahill and Dan Cahill, the protagonists of the 39 Clues series. She perished in a fire when Amy and Dan were very young. The fire was set by Isabel Kabra co-leader of the Lucian branch of the Cahill family. Hope was a Madrigal.
- James Cahill - Grandfather
- Grace Cahill - Mother
- Beatrice Cahill - Aunt
- Fiske Cahill - Uncle
- Arthur Trent- Husband
- Nathaniel Hartford - Father
- Amy Cahill - Daughter
- Dan Cahill - Son
Appearance and PersonalityEdit
In book six, In Too Deep, Amy starts to remember her mother. She had a playful sense of humor and was very silly. She also has a electronic chip containing a clue in her arm. Hope loves exploring, digging, and traveling . She looks a lot like her ancestor Madeleine Cahill.
The Maze of BonesEdit
Dan lost the only picture he has of his mother and father.
The Black CircleEdit
With no appearance in this book, Hope Cahill and Arthur Trent's Picture in front of The Russian Embassy was inside NRR's package which was given to Amy Cahill and Dan Cahill. Dan was happy he had a new picture of his parents
In Too DeepEdit
It is revealed that the ones who set up the fire were Isabel Kabra.
The Viper's NestEdit
She was an archeologists that means that she's good at field study.
Hope appeared in Card 427. There is also an X-Ray of her arm in Card 60 which has a electronic chip in it.
She is known to have had these clues: