What kind of story unfolds when an alcoholic ex-detective becomes a serial killer who cuts smiles?

Another great one is 'Gone Girl' by Gillian Flynn. It's a complex tale where the line between victim and perpetrator gets blurred, with elements of mystery and psychological thriller. The characters are intricately developed, and the plot keeps you guessing throughout.

One popular serial killer detective novel is 'The Silence of the Lambs' by Thomas Harris. It features the brilliant and terrifying serial killer Hannibal Lecter. Another is 'Red Dragon' also by Harris, which introduced the character. And 'Gone Girl' by Gillian Flynn has elements of a mystery involving a complex relationship and a possible 'killer' of sorts in a very twisty plot.

One popular one is 'The Silence of the Lambs' by Thomas Harris. It features the brilliant and terrifying serial killer Hannibal Lecter and the determined detective Clarice Starling.

Some of the best are 'I'll Be Gone in the Dark' by Michelle McNamara. It's a non - fiction account that reads like a thriller as it details the hunt for the Golden State Killer. 'The Alienist' by Caleb Carr is also a great pick. Set in 19th - century New York, it has a psychologist and a detective teaming up to catch a serial killer preying on young boys. And 'Sharp Objects' by Gillian Flynn, which has a journalist returning to her hometown to cover a series of murders.

The possibilities are endless. It could be a sci-fi thriller where the robot has a hidden agenda and the man must uncover the truth. Or perhaps a comedy, filled with humorous misunderstandings and wacky situations as they interact.

Perhaps it's a slow-burning, tender love story that develops over time with many sweet moments. There might be obstacles and challenges they have to overcome together to reach a happy ending.

Well, it might be a story of redemption. Maybe the witch starts out as the antagonist but has a change of heart after interacting with the victim. Or it could be a fantasy adventure where they both go on a quest together.

It could be a heartwarming tale of her starting a new garden and finding joy in the process.

Perhaps it's a story of contrast, showing the different lifestyles and perspectives of the businessman and the driver. Or it could focus on their shared journey and the lessons they learn from each other along the way.

Even a new character created specifically for the fanfiction could be the serial killer. This character could be someone with a grudge against Beacon Academy, for instance. They might be killing students or professors in a way that ties into some dark secret or vendetta they have against the institution.