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"EastEnders&amp;#039; executive producer Diederick Santer has revealed that the cast member who plays Archie Mitchell&amp;#039;s killer will not be informed until the night of the live episode. The special instalment, which is to air on February 19, will see the resolution to the mystery which has surrounded Archie&amp;#039;s death in recent weeks. In an interview with This Morning, Santer confirmed that the killer&amp;#039;s identity will remain top secret until then. He also said that he is planning to wait until the live episode is being broadcast before revealing all to the individual who plays the murderer. He explained: &amp;quot;Viewers will discover in that episode who the killer was and the reason to watch this one is because it&amp;#039;s going to have this amazing reveal, but also the real reason we are doing it is to absolutely keep it a secret until that time.  &amp;quot;Until that day, only six people will know who the killer is and that night, probably while we are transmitting the show, I will speak to the actor or actress and tell them that it&amp;#039;s them.&amp;quot; On the logistics of the live episode, he added: &amp;quot;We would have rehearsed a number of endings, and we&amp;#039;ll say to the cast and crew that we are &amp;#039;doing ending number 3 now&amp;#039; or &amp;#039;we are doing ending number 9&amp;#039; or whatever.&amp;quot; The climactic instalment is expected to be the highlight of the BBC soap&amp;#039;s 25th anniversary celebrations. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/soaps/eastenders/news/a196451/enders-killer-wont-know-until-live-ep/>