Vanishing without a trace

Write about a bustling city where people mysteriously start disappearing one by one.

What happens when normalcy is disrupted in an unsettling manner within a large community? How does it impact the remaining citizens, their trust, their values? This prompt is asking to create suspense by examining the mystery of the disappearances, how individuals attempt to solve it, who or what is behind it, and whether the vanishing could be stopped.