Complex sentence: Stanley also convinces her to investigate Hector's file to secure Hector's release, forcing Louise to confess that she lost it, which incites the disgusted Attorney General into starting a federal investigation of Camp Green Lake.
Split into simpler sentences: Stanley also convinces her to investigate Hector's file to secure Hector's release. However, Louise is forced to confess that she lost it, which incites the disgusted Attorney General into starting a federal investigation of Camp Green Lake.