Jac (The Magician's Apprentice)
From Tardis Wiki, the free Doctor Who reference
Jac was a member of the Unified Intelligence Taskforce who investigated the mystery of how all the planes on Earth could have "frozen" in mid-air simultaneously. She said it was beyond any human technology, a conclusion she came to due to her love of Science fiction TV shows. She was relieved when the planes were released by Missy, and then used a computer algorithm in order to search for the Doctor. The algorithm was based on searching for words such as "blue box" and "Doctor", which generated many results. Using criteria given to her by Clara Oswald, she was able to narrow it down to a single location, Essex in 1138. (TV: The Magician's Apprentice)
