In the upcoming episode that will be aired on January 23, 2017, at 8 p.m. EST, Supergirl will discover the secret hidden by Mon-El. Mon-El hails from the planet Daxam and works as Palace Guard for Prince of Daxam. He might be the Prince of Daxam itself. The upcoming episode will reveal the secret and might end up making the relationship between Supergirl and Mon-El little awkward.
