Nicole had disappeared after all.
According to information released by the investigation bureau afterward, although it was confirmed that the "young girl" had indeed boarded the train that night, her whereabouts afterward had become difficult to determine.
The only clue they were sure of
was that later, beside the train tracks, they found the body of a female passenger who had been traveling alone to Springs to visit relatives. Moreover, records from Springs indicated that this lady had disembarked normally at the terminal station.
...
In that case, things seemed rather simple.
Unless something unexpected had occurred, Nicole had most likely discreetly handled and assumed the identity of this lone woman on the train and then swaggered into Springs.
—As for now,
in a city with a population reaching millions, considering Nicole's demonstrated ability to disguise, the probability of catching her quickly was practically non-existent.
It seemed never-ending...