Also Known As by Robin Benway
From Goodreads: ALSO KNOWN AS is the story of Maggie, a gifted teenage safecracker, who works alongside her parents as a spy for the mysterious entity known as the Collective. When she's assigned to infiltrate a private Manhattan high school, she's forced to make friends, investigate the mysterious Jesse, and solve the case, all without blowing her cover.
I am really loving the sound of this one - a bit teen Alias-esq! Plus I adored Audrey, Wait so I am extra excited!
It's published February 2013