'Law & Order' Star Kathryn Erbe Testifies Against Stalker'Law & Order: Criminal Intent' star Kathryn Erbe plays a cop on her hit show and now she's taken a real-life bad guy off the streets. The actress, who has been the target of a stalker for the past three years, testified in a Brooklyn court against the alleged offender, according to the New York Daily News.

Erbe told a Brooklyn courtroom that alleged stalker Charles Nagel "infiltrated my life." The actress who was accosted by Nagel on an 'L&O' set in 2008 said from the first time she became aware of Nagel, she "got a very bad feeling from him."

Nagel, who is married with two children, reportedly sent bizarre and obsessive messages to Erbe's co-workers and family members, including her teenage daughter.