The BBC have confirmed that the renegade Time Lord's shock return will officially happen in the tenth series' June 24 episode, called World Enough and Time.
The character was last seen on the sci-fi drama in 2009 when David Tennant held the coveted role in its tenth incarnation. The Master then departed from the show with a bang after helping Tennant's lead battle to save Earth from the Time Lord invasion in the episode The End of Time.
The news comes as something of a surprise to fans who have watched the character's female reincarnation Missy (played by Michelle Gomez) alongside Peter Capaldi this season.
But viewers can expect that Simm's story-line will continue on into the finale, which is titled 'The Doctor Falls'. The finale will also feature the Cybermen from the classic 1960s episodes.
Via The Express by Roxanne Hughes
