 Yellowstones prequel series, 1923, starring Helen Mirren and Harrison Ford premiered with a bang. The new series that takes place in, you guessed it, 1923 finds the Dutton clan dealing with a range war, the aftermath of World War I, African safaris and some crooked sheepherders. What happened on the last episode of 1923? In ... Is There a New Episode of Yellowstone Spinoff 1923 This Week... 