older under cover cop following older guy who kill people with knife

To take down South Boston's Irish Mafia, the police send in one of their own to infiltrate the underworld, not realizing the syndicate has done likewise. While an undercover cop curries favor with the mob kingpin, a career criminal rises through the police ranks. But both sides soon discover there's a mole among them.

When Cole returns to Yang's haunted temple to seek revenge on a former Airjitzu Master, he accidentally uses a powerful Dark Magic blade that unleashes the spectral forms of Ninjago's greatest villains and traps himself in the temple. The Ninja must return the ghosts to the Departed Realm before it's too late.

Tough narcotics detective 'Popeye' Doyle is in hot pursuit of a suave French drug dealer who may be the key to a huge heroin-smuggling operation.

The exciting story of the making of William Friedkin's The French Connection (1971), hosted by former NYPD detective Sony Grosso, who inspired the character of Buddy 'Cloudy' Russo, played in the film by actor Roy Scheider.

Frank Serpico is an idealistic New York City cop who refuses to take bribes, unlike the rest of the force. Frank's actions get him shunned by the other officers, and often placed in dangerous situations by his partners. When his superiors ignore his accusations of corruption, Frank decides to go public with the allegations. Although this causes the Knapp Commission to investigate his claims, Frank has also placed a target on himself.

In 1972, officer Frank Serpico exposes the corruption which poisons the roots of the NYPD and becomes famous in 1973 when director Sidney Lumet tells his story in the classic film “Serpico,” starring Al Pacino.

An FBI undercover agent infiltrates the mob and identifies more with the mafia life at the expense of his regular one.

New York City detective Daniel Ciello agrees to help the United States Department of Justice help eliminate corruption in the police department, as long as he will not have to turn in any close friends. In doing so, Ciello uncovers a conspiracy within the force to smuggle drugs to street informants.

The true story behind the Prince of the City.