"20/20" GETS RARE ACCESS INSIDE A POLICE INVESTIGATION FROM START TO FINISH AS THEY UNLOCK A 10-YEAR MURDER MYSTERY OF AN OREGON TEENAGER

Jim Avila's Report Airs on "20/20," Friday, October 15, 10 pm ET on ABC

"20/20" goes inside a police investigation as they help unlock a murder mystery haunting a community for ten years. In the summer of 2000, 15-year-old Leah Freeman went missing in Coquille, Oregon. For weeks the police chief treated it as a missing person case, until Leah's decomposed body was found a few miles out of town. Speculation swirled over who the killer could be. Now, ten years later, the new Police Chief Mark Dannels has made it his personal goal to find Leah's killer. He reorganized the case and called in The Vidocq Society.

Known as the heirs of Sherlock Holmes, The Vidocq Society gathers ace detectives from around the world to solve the world's most perplexing cold cases. The group, formed by freewheeling, forensic sculptor Frank Bender, FBI, U.S. Customs agent William Fleisher, and pre-eminent forensic psychologist and profiler Richard Walter, have pledged themselves to a grand quest for justice.

The question is - Will it be enough to catch Leah's killer?

Jim Avila's reports on "20/20" airing FRIDAY, OCTOBER 8 (10:00-11:00 p.m.,ET) on the ABC Television Network.

"20/20" is anchored by Elizabeth Vargas and Chris Cuomo. David Sloan is executive producer.