User blog comment:M Bierhoff/Death & Destiny/@comment-4623180-20111202071153

I STRONGLY recommend you check this out. http://www.google.com.au/url?sa=t&rct=j&q=merlin%20series%205%20interview%20julian&source=web&cd=1&ved=0CDIQFjAA&url=http%3A%2F%2Fwww.cultbox.co.uk%2Finterviews%2Fexclusives%2F2535-johnny-capps-a-julian-murphy-merlin-interview-part-2&ei=CnrYTqyWFujnmAWMvrjRCw&usg=AFQjCNHa48lMsE8fIxNvN0YCLlwyUrR_xQ

Mordred will return at the end of series 4, then your questions will be answered. There have indeed been quite a few absences, but I think they were intentional. Let's just wait and see!