In the modern city of Linzhou, there is an "Echo Alley" hidden in an old alley. The "Echo Office" at the end of the alley is a secret and special institution in the industry. It specializes in "forgotten cold cases." When people or objects related to an old case develop a strong "obsession", a "memory echo" will be triggered, leaving "echo objects" carrying the fragments of the case in the office, such as old bloody handkerchiefs and old records that have been played repeatedly. These echoes connect the unresolved past and the living present. The firm seems to be undertaking an "obsessive commission", but in fact it is piecing together the hidden truth. The echoes of each unresolved case coincide with a new crisis that is occurring.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.
