The series focuses on Garrett Quirke, the chief pathologist in a Dublin city morgue -- a charismatic loner who uncovers the secrets of a series of sudden deaths in 1950s Dublin.
Morgan started filming the series on Monday but regrets he can't show off his thick Armagh accent.
"Although I'm working in Dublin, I'm still not using my own accent! Hopefully I'll get to use my own accent soon." Colin was delighted this week when he scooped the gong in London, beating off stiff competition from Benedict Cumberbatch in Sherlock and Doctor Who's Matt Smith.