Millie Davis is a Canadian actress who played Ms. O / Big O in the TVOKids/PBS Kids series Odd Squad, Riley in the Amazon Prime television show Dino Dana, Summer in Wonder, and Gemma Hendrix in Orphan Black.
In 1999, four friends—Sal, Frank, Opal, and Moloch—try to make their way through the chaos of mysterious murders that lead back to a group of teenage hellspawn.
