Ep 12. Expert

"Expert" is the twelfth episode of the eighth season of the television series Law & Order. In this episode, the Manhattan District Attorney's office is investigating a case involving a street drug that has left several young people dead or comatose. The team discovers that the manufacturer of the drug has used an unusual ingredient, and they struggle to find out where it came from.

At the same time, the team is handling another case in which a woman accuses a famous scientist of rape. This leads them to bring in an expert witness to testify about the nature of the drug that was found in the victim's system. The team soon learns that the expert witness has a history of lying in court, and they must determine whether or not to use his testimony.

As the investigation into the drug continues, the team discovers that the unusual ingredient used in the drug was deliberately added to make it more addictive, and they work to track down the source of the ingredient. Meanwhile, the trial of the scientist accused of rape continues, and the team must decide how to proceed with the expert witness.

Ultimately, the two cases come together in a surprising way, and the team has to use all of their skills to bring the perpetrators to justice. "Expert" is a tense and thrilling episode that showcases the best elements of the long-running crime drama series.