"SIEGFRIED & ROY: THE MAGIC RETURNS"

Elizabeth Vargas Anchors a Special Edition of "20/20" About the Entertainment Icons and Their Farewell Performance, Airing on Friday, March 6 at 9:00 p.m., ET on ABC

A one-night, one-time illusion, for one cause. Siegfried & Roy, whom no one expected to ever see onstage again, are coming back one last time for a night of magic from the Power of Love charity gala benefiting Keep Memory Alive, the foundation for the Lou Ruvo Brain Institute. ABC News will capture their highly-anticipated performance for a special edition of "20/20," "Siegfried & Roy: The Magic Returns," airing on FRIDAY, MARCH 6 (9:00-10:00 p.m., ET) on the ABC Television Network. The one-hour event, anchored by Elizabeth Vargas, will feature exclusive interviews with Siegfried & Roy at their home in Las Vegas, highlights from the duo's unbelievable career and Roy Horn's inspiring recovery, culminating in the performance on February 28, 2009 from the Bellagio Hotel and Casino in Las Vegas.

At last year's Power of Love Gala, Siegfried & Roy surprised the world and announced they would deliver one final performance to benefit Keep Memory Alive, the foundation for the Lou Ruvo Brain Institute. Siegfried & Roy have been iconic entertainment legends for more than 40 years and have not performed since Oct. 3, 2003.

The Lou Ruvo Brain Institute, designed by world-renowned architect Frank Gehry, broke ground on its future site at Union Park in downtown Las Vegas on Feb. 9, 2007. With projected completion by mid-2009, the Lou Ruvo Brain Institute will be the premier research and treatment facility for all chronic brain disorders. Headed by Dr. Zaven Khachaturian, PhD, and supported by internationally acclaimed researchers, the Lou Ruvo Brain Institute will focus on the research and treatment of Alzheimer's, Huntington's, Parkinson's, ALS and memory disorders.