(This story is inspired by an interactive story from writing.com called The Moriarty Arms: <http://www.writing.com/main/interact/item_id/1586877-The-Moriarty-Arms>)
On the outskirts of a large town, a new hotel has just opened. HÔtel d'échange offers a luxury experience at economic prices. The ten story, ninety room hotel can accommodate anyone of any age or station of life, and offers a wide range of options: from single bed rooms to luxury suites. Guests can stay for several weeks, or may only visit a few hours. The hotel features a swimming pool, conference rooms, exercise facilities, and a fantastic restaurant and bar. It has generated quite a bit of buzz in the town and surrounding areas, and many people are hopeful that the hotel's success will mean a brighter economic future for the area.
However, they know very little about the man behind the whole operation. Dr. Morton Chang retired shamefully from academia over a decade ago, after some controversial research. Now he has set off on his own, determined to study human identity and behavior, and engage in the manipulation thereof.
Now, a few ground rules:
-Dr. Chang's lab and office is located in a sub-basement below the hotel, and requires a special key card and passcode for the elevator to access that level. The Doctor mostly keeps to himself, with only a handful of assistants. The rest of the hotel's staff and guests are unaware of what Dr. Chang has in mind. If anyone should stumble upon these facilities, the consequences would be dire.
-Anything can be exchanged between people, be it physical or mental traits. The actual mechanism for the exchange can be any number of things, from a something in Dr. Chang's lab, to some seemingly mundane object in one of the rooms, or you may even just skip to the aftermath.
-People who are experimented on at the same time do not notice anything strange about themselves or those they are with, whether they be family groups, couples or individuals. The other guests and the staff throughout the hotel may notice alterations to other people, but not changes to themselves.