BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
Prophecy of the Force
The Jedi Temple is under siege. Qui-Gon and Obi-Wan, recently reunited after their falling out on Melida/Daan, must work together to find the intruder. They must reconcile their Master/Padawan relationship and reestablish trust. But to do so, they will come face-to-face with their greatest rivals, resurfacing the darkest moments of their respective pasts. The ramifications of this book will be felt for many more books to come.
The Jedi Temple is under attack. An attempt has been made to kill Yoda. A dangerous intruder has infiltrated the Jedi.
Everybody is under suspicion, and no one is safe from harm. Obi-Wan Kenobi and Qui-Gon Jinn must get to the heart of the conspiracy…or watch the Temple be destroyed—from the inside.