Profiling Her, Prejudiced Against Him

He is a criminal investigation captain who puts evidence above all else. She is a profiler parachuted into the police force.

When bizarrely executed copycat murders begin to reappear, she becomes the very sort of armchair theorist he despises. She calmly analyzes criminal psychology, while he trusts only hard evidence from the crime scene and mocks her profiling as fortune-telling.

But he doesn't know that she risked everything to infiltrate the police force, all to investigate the truth behind her mentor's murder seven years ago. He also doesn't know that the old case of his own father's disappearance is entwined with the shadows she is pursuing.

Until the killer leaves a taunt on a victim's phone, meant for him alone: