Anastasia Phoenix Books in Order

At the center of the Anastasia Phoenix series is a teen who has spent most of her life feeling a step out of place. Anastasia grew up following her scientist parents from one city to another, picking up languages and survival skills but never much stability. By the time the story begins, she already knows what it means to lose home. Then her older sister, Keira, disappears, and the adults around her are too ready to move on. Anastasia isn't.

Anastasia is not a standard amateur sleuth. Because of her unusual childhood, she knows karate, speaks multiple languages, and is used to being the outsider. Those traits help when the books turn dangerous, but they also say something about her loneliness. She is capable, yet she is still a teenager trying to make sense of grief, anger, and the feeling that her family has kept whole sections of the truth from her.

That refusal to let Keira go is what drives the series. In Proof of Lies, Anastasia follows new clues about her sister and gets pulled into a much larger mystery tied to her parents' past. The hook is simple and strong: she is looking for one person she loves, but every answer opens into something bigger, stranger, and more dangerous. The books keep that emotional focus even as the stakes widen into espionage, criminal networks, and hidden agendas.

The travel matters here. A lot.

These stories move through cities, festivals, hotels, canals, and crowded public places where danger can come from almost anywhere. Diana Rodriguez Wallach uses those settings for momentum, not just scenery. Anastasia is always reading a room, trying to guess who is watching, who is lying, and which small detail might change everything. That gives the series its fast, international feel.

Marcus, the secretive boy who becomes Anastasia's ally, brings romance and another layer of uncertainty to the story. Friends and supposed enemies shift places more than once, and the long shadow over the books is Department D, the covert empire tangled up with Anastasia's family history. The series gets much of its tension from that mix of personal betrayal and big conspiracy. There is romance, but the sister story stays at the center.

Trust is never simple here.

That makes the series a good fit for readers who like YA thrillers with movement, family secrets, and a heroine who has to think on her feet. The action is brisk, but the books are really about what happens when the story you've been told about your life starts to break apart. Anastasia is tough, but she is also grieving and often unsure whom to believe. That keeps the series grounded. If you like spies, near misses, chase scenes, and sister-driven stakes, this is where Wallach goes biggest and fastest. It works best read in order, starting with Proof of Lies and continuing into Lies That Bind.