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
Alvin Dewey
Dewey is most known for his role as the chief investigator of the 1959 murders of the Clutter family in Holcomb, Kansas, a case made famous by Truman Capote's 1966 book "In Cold Blood". He worked to find the killers, Perry Edward Smith and Richard Hickock, in late 1959, before they were found on 30 December of that year in Las Vegas, Nevada.