Ian McDiarmid (born 11 August 1944) is a Scottish actor and director best known for portraying Emperor Palpatine in the Star Wars film series. He has received an Olivier Award for Best Actor and a Tony Award for Best Featured Actor in a Play for his performances. Wikipedia
Set 2 years before Rogue One and New Hope. Galen Marek (codenamed Starkiller), One of the final surviving inquisitiors is tasked to hunt down remaining Jedi or any rebels. he must decide to stay in Dark Side or turn to the Light Side.