Episode Name: His Father’s Son
Air date: 10/29/2011
Summary: Not long after his coronation Arthur finds out for the first time what it’s really like to be King. After incurring the wrath of the formidable Queen Annis, Arthur’s skills as a ruler are put into test. Camelot’s new king is forced to find the strength to become the leader his people desperately need as the lives of thousands hang in the balance and depend only on his courage and judgement.      

Watch or download Merlin – Season 4 Episode 5 – His Father’s Son at below links.