Harry Potter and the Forgotten Solution picks up where The Half-Blood Prince ended. Five weeks at the Dursley’s have left Harry shaken, lonely, and depressed. Adding to his misery, he is plagued with dreams about something that happened years before but is unable to see them clearly enough to understand their meaning. Harry leaves the Dursley’s for the last time and travels to the Burrow for a talk with his friends. But will they welcome him back when he returns? Rated "R" for sexuality in later chapters.

Who has Snape? Harry’s birthday continues. The Hogwarts staff search for clues about what happened.

Harry and Ginny have a long talk and everyone is reminded the war is not far off.

Harry discovers what "he knows" means. The new Order of the Phoenix is gathered. Harry receives a surprise birthday present.

The battle at the Burrow takes an unexpected turn and McGonagall forces the issue of the Trio's seventh year.

After the battle at the Burrow, the travelers make a small diversion before heading home. A lot of preparation goes into the trip to Godric's Hollow for such a short visit. Was it worth it?

The results of the trip to Godric's Hollow are discussed. Martin Morley-Mauer tells Harry and the others more details about how Horcruxes are created.

Martin’s role is explained further. Bill & Fluer are married. Harry has another Occlumency lesson with Tré. The Astronomy tower becomes crowded.

Morley-Mauer give his second lesson on Horcrux theories.

Harry and Ron both have unexpected experiences over the weekend that leads to wild speculation about Snape.

Harry visits with Hagrid and another acquaintance. This chapter is rated "R" for sexual content near the end.

Harry has unusual conversations with Ginny, Albus Dumbledore and Slughorn. McGonagall gives Harry a warning. Tre impresses upon Harry & Company the importance of Occlumency.

Aberforth takes a short break. Hermione and Ron help Morley-Mauer with a mystery that sets the entire Order scurrying for information. Back at Headquarters, a surprise attack startles everyone.

The results of the "attack" on Headquarters are evaluated. Harry receives a swimming lesson. Fred and George lose something important to them. Harry displays further unusual talents.

Ginny and Harry explore their relationship further, as do Tré and Charlie.

Harry and Remus have a talk about events of the night before. Lily Evans' Potions text continues to be scrutinized. Jason makes an unscheduled trip. Max finishes compiling the research data.

More Horcrux secrets are revealed.

Tré returns to a much changed France. Harry experiences a rough first day at the American School of Wizardry in Salem.

The Weasley's look for information about Lily's past and Harry continues learning about his American cousins.

Harry tries to deal with Diane's 'affection.' Bill and Charlie head home. Hermione, Jack and Hagrid find the Giants. Martin and Aberforth destroy the Coin Horcrux.

The Order members are gathering back at Hogwarts to discuss their next steps. Harry has a second conversation with Snape who reveals the history of the Forgotten Solution.

Harry has a talk with an old friend about an old enemy. The final pieces are being put into place in preparation for defeating Voldemort.

Harry goes after Nagini as the final preparations are made for Thursday.

Last minute preparations continue for the Thursday ceremony.

All the pieces are in place to face Voldemort and finish the war.