1.   And of course undercover cops, by the boatload, fight crime.

2.   Are there really any willing to work for psychologically unstable malcontents who cannot be relied upon to tell a professional killer from an undercover cop?

3.   Another undercover cop figures in the case of a man in Capitol Heights, Md., charged with trying to hire a hit man to dispose of his wife.

4.   As undercover cops go, Jorge Lucero was not trying very hard to disguise his identity.

5.   A female undercover cop.

6.   A lot of people have complained about the use of undercover cops, he said, but he thinks it is the only way to change driving behavior.

7.   After her arrest by an undercover cop, she hires a high-class attorney, who ultimately falls in love with her.

8.   Damon Wayans as an undercover cop?

9.   Faced with the prospect of jail time for their various transgressions, the contentious trio agrees to become undercover cops.

10.   Even the hidden transmitters that undercover cops sometimes use are monitored by the very people police are trying to arrest.