undercover cop and undercover gang member try find eachover out

Chan Wing Yan, a young police officer, has been sent undercover as a mole in the local mafia. Lau Kin Ming, a young mafia member, infiltrates the police force. Years later, their older counterparts, Chen Wing Yan and Inspector Lau Kin Ming, respectively, race against time to expose the mole within their midst.

While Yeung Kam Wing is trying to remove all connections between the mob and him, his actions are being carefully observed by Lau Kin Ming, who bears a personal grudge against him.

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.

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

A young undercover FBI agent infiltrates a gang of thieves who share a common interest in extreme sports. A remake of the 1991 film, "Point Break".

In Los Angeles, a gang of bank robbers who call themselves The Ex-Presidents commit their crimes while wearing masks of Reagan, Carter, Nixon and Johnson. Believing that the members of the gang could be surfers, the F.B.I. sends young agent Johnny Utah to the beach undercover to mix with the surfers and gather information.