Another Prisoner, Another Professor

AU. In Harry's third year he must learn the various truths about the new DADA teacher, Professor Black, and an escaped convict, Remus Lupin. SB/RL.

Eavesdropping on Ron's parents, Harry learns even more about the dangers of Remus Lupin.

On the train to Hogwarts Harry, Ron, and Hermione encounter a new teacher, Professor Black.

Malfoy has something to gloat over.

The dementor arrives on the train.

The train arrives, Crookshanks has a new discovery, and the feast begins.

Malfoy is whimpering in the hospital wing, Harry and Ron read Astrophil's letter, and Hagrid is depressed.

When Neville creates a flawed Shrinking Solution, Harry surprises himself.

In the first DADA class, Harry discovers that Professor Black has an interest in duelling and a curious lack of fear concerning snakes.

All the books about blood magic are gone from the library.

Harry, Ron, and Hermione, having found no books about blood magic, decide to sneak into the Restricted Section; Fred and George discover Astrophil's letter.

Harry, Ron, and Hermione sneak into the Restricted Section, where they find a book that provides more questions than answers - much like Black, who has a strange request of Dumbledore.

Hermione is newly suspicious of Black, but Harry and Ron disagree.

While Black becomes the subject of numerous rumors among the students, Harry has another mysterious episode.

While Ron and Hermione go to Hogsmeade, Harry helps Black and his house-elf carry boxes to Black's office, where the two of them talk over a couple of butterbeers.

Most of Harry's fears are relieved, until a new threat arrives in the castle.

As theories abound and the truth is still elusive, Snape's suspicion has turned to Black.

As the first Quidditch match approaches, Harry's under stress. Ron and Hermione fighting doesn't exactly help.

As he prepares for the Quidditch match, Harry wishes he'd been more selfish.

Harry has a disturbing dream in the hospital wing. When he wakes up, he has visitors: Ron, Hermione, and, surprisingly, Cedric Diggory.

Harry and Professor Black advance their plans for Harry to learn to fight dementors, Hermione is under stress, and Snape gives Harry some advice Harry doesn't trust.

Harry reads about werewolves and ponders the psychology of one particular lycanthropy sufferer.

Harry goes to his first anti-dementor lesson and learns Professor Black's worst fear.

In Harry's second anti-dementor lesson, he makes progress with the Patronus Charm and learns more about Black's past and about a vulnerability of Snape's.

Harry's anti-dementor lessons aren't going as well as he would like, and everyone has advice as to what broomstick he should buy.

The bad: Fred and George can't keep their mouths shut. The good: Malfoy has detention.

Remus Lupin is sighted in Edinburgh, and Black has a different perspective on him than Harry, Ron, and Hermione.

Harry sneaks out to Hogsmeade and hears the professors, Fudge, and Madam Rosmerta talking about Black, Lupin, Peter Pettigrew, and Harry's father.

Harry can't forgive Black and finally takes Snape's advice.

When Harry arrives at a new theory, he, Ron and Hermione plot to break into Black's office.

Harry, Ron and Hermione break into Black's office and find a variety of surprises.

Ron thinks he's got the answer to what's wrong with Black; Harry agrees, but Hermione isn't convinced.

Harry, Ron and Hermione start a new unit in Defense Against the Dark Arts, and Professor Black becomes even busier.

Ron and Hermione continue to argue about Crookshanks and Scabbers, and Harry finds out some new information about Black.

Crookshanks versus Scabbers intensifies, Snape has a shock, Ron and Hermione make a bet, and Professor Black has startling news.

The Malfoys may be investigated regarding Regulus's disappearance, and Black warns Harry to stay out of the entire situation.

Harry, Ron and Hermione theorize about the Malfoys, Pansy Parkinson is a surprising ally, and Ron and Hermione's bet is settled once and for all.

The bet is settled for good, Ron finds out who the bearded man is, and Lavender has an emotional episode.

Oliver Wood puts some faith in Cedric Diggory, Gryffindor plays against Ravenclaw, and Black has some news for Harry.

The press steps up coverage on the investigation of the Malfoys.

Opinions on the werewolf school differ, Hermione has a plan about getting the blood magic book, and the morning of Buckbeak's hearing arrives.

A surprise visitor has some startling information for Harry - but not on the topic Harry wants.

Hermione has a different take on Dobby's story. Harry tells Black something important, but not before Black tells him something else important first.

Black tells the story of the day after Harry's parents died.

Harry hears more about Black's house and the two of them think over how to save Buckbeak.

Hagrid tries to find hope and Valentine's Day has a few unpleasant surprises for Malfoy.

Hermione's plan doesn't turn out the way she expected.

The Trio have to keep a secret, Lavender draws some conclusions about the Astrophil letter, and Brutus Swift has a theory that might change everything.

Swift argues for Lupin's innocence and Harry learns another secret of Black's, though not the one he wonders about the most.

Brutus Swift has an idea, and tells Black some news about Regulus.

Harry learns more about his family, Black's family, and why Pansy Parkinson changed her mind about Malfoy.

In which Harry starts the Easter holidays early, Black is in something of a mood, and the author throws in a classical allusion.

Harry gets a crash course in Black family history.

More Black family history.

Harry catches something the Aurors missed; the Tonkses arrive.

When he was fourteen years old, Regulus Black started keeping a diary.

Something else was left with the diary...

At St. Dymphna's, Harry muses about right, wrong, and Regulus Black.

Harry gets used to life at Grimmauld Place.

As the Easter holiday nears its end, Sirius, Harry, and Brutus Swift have to adjust some of their plans.

In the week before the Quidditch final, Wood has strategy, Hermione has insight, Pansy has plans, and Sirius has news from Moody.

The Malfoy investigation yields good news and bad news.

The Quidditch final.

Regulus's estate provides a surprising revelation.

Harry and Sirius have their first fight.