Movie
The Deputy
Narrative tropes
You Can't Trust Anyone
highToby's own colleagues — the people he is institutionally supposed to trust — are complicit in the criminal network. He can identify only one trustworthy ally (Amanda) out of an entire department. The conspiracy is hidden inside an ostensibly legitimate law-enforcement body, his paranoia is fully validated by what he uncovers, and the antagonists (Banks and the other corrupt officers) were hiding in plain sight as fellow deputies.
About this trope: Trusted allies, institutions, or authority figures are secretly working against the protagonist. Paranoia is justified because betrayal is real and pervasive.
Cultural messages
The System Is Rigged
highThe sheriff's department — an institution meant to protect — is revealed as deeply corrupt: multiple officers have long been looking the other way, and Deputy Billy Banks actively pressures Toby to drop his inquiry and stay quiet. The cover-up is internal to the official body, working within the system puts Toby at personal risk, and true justice requires him to push against his own organization.
About this message: Institutions meant to protect people — governments, corporations, law enforcement, the justice system — are depicted as corrupt, incompetent, or actively harmful. Heroes must work outside official channels.
Movies that share these tropes
Full plot (spoilers)
Based on the novel by Victor Gischler and directed by Matt Sukkar, The Deputy follows rookie part-time Deputy Toby Sawyer (Duke Nicholson), who is jolted awake in the middle of the night by Chief Krueger and ordered to stand guard over a dead body at a crime scene until the coroner arrives. An hour later, the corpse has vanished without explanation. Toby's desperate search to locate the missing body pulls him into a web of deep-rooted corruption in his small town: he uncovers a truck loaded with undocumented immigrants, a freezer packed with cash, and a pair of vengeful siblings connected to the crime. He discovers that multiple fellow officers have long been looking the other way, including the menacing Deputy Billy Banks, who pressures Toby to drop his inquiry and stay quiet. The only colleague Toby believes he can trust is Deputy Amanda Jackson (Tiffany Haddish). Caught between a need to hold onto his job and support his family, and a moral compulsion to expose what he has found, Toby must navigate the town's entrenched criminal network before the same forces that made the body disappear turn their attention to him. Note: this film had not yet released as of the data-gathering date; the above is drawn from official pre-release promotional materials rather than post-release reviews or a completed Wikipedia plot section.
Sources: web search aggregating IMDb overview, promotional press coverage (themovieblog.com summary), Letterboxd, Fandango synopsis