A faded nightingale brooch is the signature of death in a ten-year unsolved case.
Six dead, six brooches. The murderer is at large.
She is the only survivor and the only witness.
She returned to the scene of the murder as a profiler, and together with the crime captain, who was traumatized by the same old case, tracked down the brooch that should have belonged to her.
This time, the murderer is in the open and they are in the dark.
All the secrets of the Nightingale case are hidden in the "seventh brooch".
The owner of the seventh brooch is back. This time, she won't run away.