a crime scene is best visited 100 times
A police saying emphasizing that repeated visits to a crime scene yield crucial evidence; used as a fixed expression.
The detective said, "A crime scene is best visited 100 times," and went to the scene of the crime again and again.
A set phrase from police jargon, literally 'scene 100 times'. The exact origin is uncertain, but it reflects the investigative principle of thorough on-site examination.