I realize now the reason was because the order to terminate the investigation had already been given by Inspector Paul Roy, that most of the people had been sent back to their home bases, and that Sergeant Frizzell had been required to produce his final report.
Je comprends maintenant pourquoi, étant donné que l'inspecteur Paul Roy avait déjà donné l'ordre de mettre fin à l'enquête, que la plupart des gens avaient été renvoyés à leur service d'attache et que le sergent Frizzell devait, quant à lui, remettre son rapport final.