List of The 39 Clues characters
Nellie Gomez (from Boston, Massachusetts) is Amy and Dan Cahill's au pair. She is an aspiring chef and musician. She is considered as Amy and Dan's guardian throughout their travel. Throughout the books, she is the children's only trusted adult, until they learn she is a spy (hired by Grace Cahill). In the sixth book, she is revealed to be a trained pilot. She was later in the series granted active Madrigal status. Her card is No. 244. In Cahills vs Vespers she is abducted by the Vespers along with Reagan Holt, Fiske Cahill, Phoenix Wizard, Ted Starling, Natalie Kabra and Alistair Oh
The 39 Clues
After receiving a telegram from the mysterious "NRR", Dan and Amy leave for Russia. Upon their arrival, another hint from NRR leads them to a credit card and false passports belonging to their dead parents. NRR states she is Nataliya Ruslanova Radova, the daughter of the last Romanov, a Cahill. She escaped to live with a low profile. A blood disorder stops her from joining the Clue hunt. Amy and Dan make an alliance with the Holts, and discover a stronghold. It reveals the next clue, Amber.