Put as many words into the gap as possible.

Detective fiction Most fictional detectives are outsiders 10) ...... operate in a twilight zone 11) ....... established authority and the underworld 12) ......... display skills and traits from both. 13) ........ the detective is a part of established authority, the narrative is likely to be an occupational biography, a courtroom drama, or a police 'procedural' that describes a 14) ........... of doing 15) ............. than of knowing. 16) ....... the Inspector Maigret novels of the Belgian writer George Simenon and 17) ............ Martin Beck stories of the Swedish team of Maj Sjowall and Per Wahloo 18) ........ into this category, as 19) ................ the Perry Mason stories of Erle Stanley Gardner in the United States.