Everyone loves to hate acronyms. Learn Improv’s acronym for narrative is STEPS. Setting. Ties. Explore. Propel. Sort.
The two performers are removed from the theatre and the host sets up a crime scene with other performers and audience members. The host gets an offer of a crime that has happened (most often a murder). The two detectives return and justify all the human prop positions creating a narrative of how the crime transpired.
This is an open scene done backwards. This means that the first thing the audience will see is the last moment of the scene, and the last thing they see is the beginning of the scene. Performers do not talk backwards in a Backwards scene. Just the narrative is backwards. There are few tricks to help make this work.