When he was eighteen years old, Wen Ci saw his stepfather strangle his mother to death.
In court, she testified, but the six "eyewitnesses" all changed their stories - no one saw it, no one heard it, and her mother slipped and fell to her death.
On the day his stepfather was found not guilty, Wen Ci was sent to a mental hospital.
Thirteen years later.
Late at night, criminal investigation team leader Shen Nian received an anonymous call:
"No. 137 Jianshe Road, there is a murder."
When she arrived, she saw a male corpse - the way of death, posture, and scene layout were exactly the same as the unsolved case thirteen years ago.
There is a line of words written in blood on the wall:
"The sixth witness is dead, leaving seven."
Shen Nian began to investigate, but found that all the clues pointed to one person——
Wen Ci was just released from a mental hospital and changed his name.
But when she faced the interrogation, she just laughed softly:
"Captain Shen, you made a mistake."
"I'm not a murderer."
"I am the next person you want to protect."
Intention: All sins will eventually be punished