 I'm Lisa Taylor. New details are coming to light regarding the investigation into the drug-caused death of Friends star Matthew Perry. ABC's Alex Stone reports. With the LAPD, Drug Enforcement Administration and U.S. Postal Service nearing an end to their months-long investigation into the ketamine that took Matthew Perry's life, law enforcement sources now tell ABC News multiple people could be charged based on the case that will be presented to the U.S. attorney.