Complex sentence: April 2013-Jason has just finished filming the British feature film "Down Dog", playing the lead Frank alongside Nick Moran, and he is now on tour starring as Sherlock Holmes in the stage play,'Sherlock Holmes-The Best Kept Secret'.
Split into simpler sentences: April 2013-Jason starred in the British feature film "Down Dog", playing Frank alongside Nick Moran. He also toured, starring as Sherlock Holmes in the stage play'Sherlock Holmes-The Best Kept Secret'.