Ok, I'm in the mood for something fairly violent, so I'm thinking about a stalker who hides in a business after the place is closed to take the object of his desire. There are maybe five co-workers with her, and he disposes of them one by one in rather gruesome manners while making her watch. PM if interested.
Edited to include: this will be mostly non-sexual, more of a serial killer stalker scenario. There is room for suggestiveness etc, and with the right idea, something nc might be added.