Harry Potter and The Prisoner of Azkaban
Harry Potter and The Prisoner of Azkaban is the 3rd addition to the Harry Potter series. Harry is all set to go back to Hogwarts when he learns that the infamous Serious Black has escaped from the wizard prison known as Azkaban, and is supposedly out to get Harry. In an attempt to protect Harry and the rest of the school, dementors are dispatched to Hogwarts to capture Serious Black. Things don't go as planned as they usually don't, and the whole school lives in fear when word goes out that Serious has arrived. Harry learns that the reason Serious is a criminal was because he was the one who betrayed Harry's parents to Voldemort. After hearing this news, Harry swears to kill Serious Black if they were to meet. Later on in the story Harry gets his opportunity when he finds himself face to face with the man responsible for the death of his parents. After a quick fight, Serious reveals himself as Harry's Godfather, and his father's best friend. He explains to Harry who really betrayed his parents, Peter Pettigrew and that he was really after him, not Harry. After hearing the true stories from Serious, Harry helps him escape the dementors who had tracked them down. Harry's views on Serious changed drastically throughout the book. He went from wanting to kill Serious on sight to wanting to live with him after the school year was over. Unfortunately Serious was still on the run and so Harry couldn't stay with him, but he promises Harry that he will always protect him and come to him in a time of need.
An interesting character introduced in this book was Professor Lupin. He is the replacement defense against the dark arts teacher. The first time we see him is on the train to Hogwarts. Harry, Ron, and Hermione sit in the same train car as him as he sleeps. While on the train, dementors come aboard and attack Harry. Lupin wakes up and casts a patronus to dispel the dementors, showing the three students he has experience in fighting. I think Lupin's character is a really good mystery to think about throughout the book. Clues are presented throughout the story and by the end, you figure out that he's a werewolf. He mysteriously isn't in class during full moons, his biggest fear is a full moon shown by the boggart, Professor Snape gives a lesson on werewolves when Lupin is out "sick", and later on it's revealed that Snape has been making Lupin a potion designed to sustain his human form. You finally see Lupin as a werewolf when he forgets to take his potion on the night of a full moon. It makes you understand why Lupin keeps his "other side" a secret because when he transformed, he couldn't control himself and attacked every one including Harry and Hermione who just barely escaped. So overall, Lupin is a very mysterious character who you learn more and more about throughout the book and that's what makes you love his character. Lupin plays a major role in this book and is equally important throughout the rest of the series.
Have you ever read a book or watched a movie where there was a character who's life was a mystery? How was their mystery solved and what did you find out about that character?