Confirmed cast includes Anna Silk (Bo), Kris Holden-Ried (Dyson), Ksenia Solo (Kenzi), Rachel Skarsten (Tamsin), Rick Howland (Trick), K.C. Collins (Hale), Paul Amos (Vex), Emmanuelle Vaugier (Evony), and Zoie Palmer (Lauren). 

Confirmed guest stars include George Takei, Mia Kirshner, and Ali Liebert. 

The season is said to "turn everything upside down," blurring the lines between the Light and the Dark Fae. Cast tweets and interviews seem to show that Bo is MIA to the group at the start of the season, and that Dyson and Kenzi are together. Tamsin's whereabouts remain unknown, as do Lauren's. 

Based on since deleted tweets, two actresses have been brought in to play the parts of teen Tamsin and teen Bo. 

It's also been said that there will be more valkyries present in the season, and that Tamsin may be speaking some Norwegian, much to her fan's excitement. 

According to a tweet from Ksenia Solo, there is expected to be more Tamsin/Kenzi interaction in the next season.