Detective Mole/Playing With

Basic Trope: A detective turns out to be a bad guy.

Straight: Jason, a police detective investigating a murder, was working with the criminals the whole time.
Exaggerated: Jason was the mastermind.
Downplayed: Jason was an accomplice, being blackmailed into helping the murderers.
Justified: Jason hoped that by pretending to help, that no one would suspect him.
Inverted: Reverse Mole
Subverted: Jason pretends to be a detective to get information on the police, but he undergoes Becoming the Mask.
Double Subverted: But in the final moments, chooses to stay faithful to the crooks.
Parodied: Jason is obviously the bad guy, always giving obviously incorrect clues and leads, and intentionally distracting the investigators from any legitimate leads, but no one seems to notice.
Zig Zagged: ???
Averted: There is no bad guys investigating the crime.
Enforced: ???
Lampshaded: ???
Invoked: Jason worked hard to earn a badge and a good reputation as a cop just for this moment that he can commit a crime and lead the other detectives astray.
Exploited: ???
Defied: ???
Discussed: ???
Conversed: ???