#Watch Supergirl Online: Season 6 Episode 15

Did Supergirl find the remaining totems?

On Supergirl Season 6 Episode 15, there was even more heartache for everyone when Nyxly made her next move to get all the power.

Meanwhile, William disappeared, leading to some big concerns about his future.

Elsewhere, Alex faced the biggest challenge of her life as she turned to her girlfriend for support.

Use the video above to watch Supergirl online right here via TV Fanatic.

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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.