Anna Windsor

Anna Emilia Clarke-Windsor is Elizabeth's twin sister and a main character in the books.

Biography
Anna was born on the same day as Beth, only being a couple minutes older, to famous mystery writer Richard Clarke and his Russian student Morgan Hunt. Morgan left the family soon after, leaving the two girls with their father. They were raised in Santa Monica until they were fourteen, when they were recruited by the government to attend the Bedford Boarding School, a training facility where they trained in covert operations, languages and various other subjects. She was very popular and had a lot of friends, including Grace Wellington, who was murdered during their senior year. During that same senior year, she met Frederick Windsor, the handsome heir to the British throne, at the engagement party of her sister with his cousin. They soon became a couple and got married only two years later, causing a lot of controversy in the kingdom. A year later Anna gave birth to a daughter, Isabella Elizabeth, named after her sister.

Classified Love
Anna first comes to light when Beth has been badly injured in a car crash caused by their mother, Morgan (unbeknownst to them). She is shown to care for her sister very much and she and her family stay with her later on, when Beth is at Chuck's apartment. They have their Christmas eve dinner together later, but the next morning Beth and Chuck go to L.A. to safe her father. While they're there, Anna and her family travel to DC to visit the president.

Classified Love: World War III
Again, Anna appears first when Beth is in the hospital, this time in the Netherlands, and for shot wounds. She transfers with her sister to the embassy, when it is raided by terrorists. She hides from them in a closet, until a smart move from Beth helps her get away. Later they safe all the hostages. Immediately after, they travel to New York, to help the newly single Hanna move on. To be continued...

Trivia

 * She has a very bad poker face, and always loses at poker.
 * She is 15 minutes older than Beth, and thus always refers to her as her little sister.