1920's-30's Muggle AU, New York City. Fleur is an investigative reporter at a newspaper, and she's never dropped a case before. She gets down to the bottom of the investigation, sandal or situation by any means necessary.
Harry Potter is a bodyguard and right hand man for a mafia lord who is only known as 'The Prince', the leader of the 'Order of the Phoenix'. But not of his own desire or free will. The man has something over Harry, something Harry is determined to protect.
One day Fleur is snooping around a Phoenix warehouse looking for evidence and is discovered by several mafia goons. They capture her, about to beat information out of her and have their way, when Harry steps in. And as he's the unofficial number two of the mafia, they listen and heed his threat. Harry lets her go, eventually gaining her trust, if only for a moment.
Harry realizes that Fleur is in danger of being found by the Order, so he fakes her death and orders her to leave the city and forget what she learned.
But a woman like Fleur Delacour won't run away with her tail between her legs, so she vows to take 'The Prince' down. And Harry, realizing that this might be his best shot to take down the don, offers to work with her to do so. And as Fleur's apartment isn't safe, and she has no family in the state, she has nowhere to go. So Harry sees no choice but to hide her at his house in order to keep her safe, but to also keep an eye on her, not trusting her desire to solve the case.
So Harry and Fleur enter a forced, testing, odd and rather unorthodox domestic together. Harry, despite being number 2, doesn't have much money to his name, so they have to both live in his tiny one bedroom apartment. He gives her his room in order for her to have privacy, but he quickly learns that the stubborn woman has no shame. And delights in walking around in her undergarments.
Mafia themed, maybe 1920's or 30's New York? Any ideas welcome.