Jasveen Sangha, who is dubbed the 'Ketamine Queen,' agreed to plead guilty to charges in connection with Matthew Perry's overdose death. Here's everything to know about the Jasveen Sangha.

The accused Los Angeles drug dealer known as the "ketamine queen" has agreed to plead guilty to charges that she supplied the dose of the prescription anesthetic that killed "Friends" star Matthew Perry, prosecutors said on Monday.

The American-British dual-national is one of five people who were charged with supplying ketamine to the actor.