См. также: secondary job, securities portfolio, second breakfast, second in a duel
The primary crime scene is where a crime actually occurred. A secondary crime scene is in some way related to the crime but is not where the actual crime took place.
In a bank robbery, for example, the bank is the primary scene, but the get-away car and the thief’s hideout are secondary scenes. In the case of a killer who commits a murder in someone’s home but transports the victim’s body to a river for disposal, the victim’s home is the primary scene, and the killer's vehicle and the point along the river where the body was dumped are secondary scenes. (Dummies)
