-This series presents the most spectacular and striking cases of police officers who have robbed, killed or intimidated while committed to protecting the public. An SPVM officer (Service police of Montreal, Canada) convicted of laundering money for a drug trafficker. Another, who, in just over a year, committed eight sexual assaults. A Quebec City (Canada) police officer who kills two colleagues while committing a robbery and who, released 17 years later, is arrested again. Questionable morals, the influence of criminals, the lure of money: whatever the reasons, these dirty cops have crossed the line between good and evil.