Episode 5 of Fortitude airs tonight on Sky Atlantic. Joi plays Axel Fersen the harbourmaster in the mystical town of Fortitude. Icelandic TV station RUV airs episode 4. 

Fortitude is getting great reviews and has a brilliant cast lead by Dennis Quaid, Sophie Gråbol, Richard Dormer, Michelle Fairlay and Bjorn Hlynur Haraldsson. Others include Robert Sheehan, Paraminder Nagra, Sienna Guillory, Rune Temte, Mia Jexen, Alexandra Moen, Luke Treadaway and Ken Stott. 

Fortitude on IMDB