One great double back Harry Potter fanfiction is 'The Second Chance'. It takes the story in a new direction where Harry gets a chance to redo certain events and change the outcome. It's really exciting as it shows a different side of the wizarding world we thought we knew well.
Search engines can be useful too. Use specific keywords like 'double back Harry Potter fanfiction' along with other relevant terms like 'time - travel' if that's a key element in the type of fanfic you're looking for. Some fanfiction communities also have their own dedicated search engines within their platforms. For example, Archive of Our Own has advanced search options that can help you narrow down your search to exactly the type of double back Harry Potter fanfiction you want.
One common theme is loyalty. Since the characters are double agents, they constantly struggle with where their true loyalties lie, whether it's to the good side like the Order of the Phoenix or the dark side like the Death Eaters. Another theme is secrecy. They have to keep their double identity a secret which adds a lot of tension to the story.
Hermione could be the one. With her vast knowledge of the wizarding laws and her sharp intellect, she might dig up some old regulations that prove Harry's right to his money. She would then fight tooth and nail in the wizarding courts or against the goblins at Gringotts to get his money back.
Harry Potter is bound to be one of the main characters. Since it's about 'double trouble', there could be a version of Harry that is different in some way, like an evil Harry or a Harry from an alternate dimension. Ron and Hermione would be there to support the real Harry. Dumbledore might also play a significant role as he often has the wisdom to deal with complex situations. And, of course, Voldemort could be a central figure as well, as he is the main antagonist in the Harry Potter series and any double trouble might be related to the battle against him.
One common theme could be the struggle between good and evil, just like in the original Harry Potter series. In fanfiction, this might be explored in new and unique ways within the context of the 'double edged sword' concept. Maybe it shows how a character's power or decision can have both positive and negative consequences.
Yes, it can be quite popular. Many fans are intrigued by the idea of Harry having the power to bring back the dead. It adds a whole new level of drama and exploration to the existing Harry Potter universe. It allows for different storylines such as reuniting with lost loved ones or changing the course of the wizarding world's history.
One possible fanfiction could be about Harry Potter accidentally stumbling upon a time - turning device in Hogwarts and ending up in the 1940s. There, he might meet the young versions of his professors, like Dumbledore, and get involved in the events that were shaping the wizarding world at that time, such as the rise of Grindelwald.
There could be a group of rogue witches and wizards who are against the current system in the wizarding world. They oppose the Ministry of Magic's rules and see Harry Potter as a symbol of the establishment they want to overthrow, so they become the antagonists.