Turn off the TV and Read: Alias

Summary from tv.com: Sydney Bristow was recruited as an undergrad to work for SD-6, which she thought was a government agency. However, when her fianc is killed by SD-6 agents, she finds out that SD-6 is actually a counter-government agency. Sydney approaches the CIA and becomes a double agent, which means that she goes on SD-6 missions, but passes the information about her missions to her CIA handler, Vaughn. Sydney's father, Jack Bristow, is also an double agent. Both had a distant relationship for years, but their present situation brings them closer together. Sydney and her father spend the first season trying to foil SD-6's missions and preventing them from getting their hands on what they are determined to get. For years SD-6 has fought against FTL and K-Directorate, two crime organizations that are also in the pursue of various artifacts build by the 15th century scientist and prophet, Milo Rambaldi. However, when a new player referred to as "The Man" comes to town, FTL and K-Directorate are put out of business and SD-6 engages in the pursue of this new mysterious opponent. After eliminating SD-6 and all of the other SD cells, Sydney, Marshall, Dixon, Jack, and Vaughn are now fully working for the CIA.

Some books that fit into the genre of Alias are:

I’d Tell You I Love You, But Then I’d Have to Kill You (Gallagher Girls series) by Ally Carter

Cammie Morgan is a student at the Gallagher Academy for Exceptional Young Women, a fairly typical all-girls school-that is, if every school taught advanced martial arts in PE and the latest in chemical warfare in science, and students received extra credit for breaking CIA codes in computer class. The Gallagher Academy might claim to be a school for geniuses but it's really a school for spies. Even though Cammie is fluent in fourteen languages and capable of killing a man in seven different ways, she has no idea what to do when she meets an ordinary boy who thinks she's an ordinary girl. Sure, she can tap his phone, hack into his computer, or track him through town with the skill of a real "pavement artist"-but can she maneuver a relationship with someone who can never know the truth about her? Cammie Morgan may be an elite spy-in-training, but in her sophomore year, she's on her most dangerous mission-falling in love.

Poison Study (Study series) by Maria V. Snyder

Choose: A quick death…Or slow poison... About to be executed for murder, Yelena is offered an extraordinary reprieve. She'll eat the best meals, have rooms in the palace—and risk assassination by anyone trying to kill the Commander of Ixia. And so Yelena chooses to become a food taster. But the chief of security, leaving nothing to chance, deliberately feeds her Butterfly's Dust—and only by appearing for her daily antidote will she delay an agonizing death from the poison. As Yelena tries to escape her new dilemma, disasters keep mounting. Rebels plot to seize Ixia and Yelena develops magical powers she can't control. Her life is threatened again and choices must be made. But this time the outcomes aren't so clear...

Sweet Tooth by Ian McEwan

Cambridge student Serena Frome’s beauty and intelligence make her the ideal recruit for MI5. The year is 1972. The Cold War is far from over. England’s legendary intelligence agency is determined to manipulate the cultural conversation by funding writers whose politics align with those of the government. The operation is code named “Sweet Tooth.” Serena, a compulsive reader of novels, is the perfect candidate to infiltrate the literary circle of a promising young writer named Tom Haley. At first, she loves his stories. Then she begins to love the man. How long can she conceal her undercover life? To answer that question, Serena must abandon the first rule of espionage: trust no one.

What are some lady spy books you've read that remind you of Alias?