Supergirl falls to power of Reign in mid-season finale
Supergirl's Christmas episode was anything but warm and fuzzy as the Girl of Steel finally faced off with the world-killing Kryptonian sleeper agent known as Reign.
All throughout the season, Lena Luthor's (Katie McGrath) best friend and coworker Samantha Arias (Odette Annable) has been struggling with an inner-turmoil as mysterious superpowers began to manifest.
Monday's mid-season finale centered around Samantha embracing her destiny as living weapon sent to earth by an evil Kryptonian faction to establish a new world order - by force!
But first, the night began with an uncomfortable reunion for Kara with former flame Mon-El (Chris Wood)... and his new wife Imra (Amy Jackson). Stranded back in Kara's timeline from the 31st century, Mon-El and Imra need Kara's help to return to their timeline.