As Katie took the last stair onto her floor, it became apparent that the sounds of laughter and hum of conversation were coming from her own apartment.

She paused for a moment, breathed in deeply, and exhaled what sounded like an epic sigh. Pushing her hair out of her face, she licked her lips and headed down the hall.

No need to use the key; it was already unlocked. No need to knock; she lived there.