E1
Episode 1
Where to watch
Not available in United States
Streaming in 1 other country
Secret Sister isn't on any streaming service in United States right now, but it's available in South Korea. Streaming rights are licensed per country.
Seasons & Episodes
E2
Episode 2
E3
Episode 3
E4
Episode 4
E5
Episode 5
E6
Episode 6
E7
Episode 7
E8
Episode 8
E9
Episode 9
E10
Episode 10
E11
Episode 11
E12
Episode 12
E13
Episode 13
E14
Episode 14
E15
Episode 15
E16
Episode 16
E17
Episode 17
E18
Episode 18
E19
Episode 19
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Secret Sister — streaming FAQ
Which OTT platform streams Secret Sister?
Secret Sister isn't on any streaming service in United States yet, but it's available in South Korea. Streaming rights differ by country — switch your country in the header to see where.
Is Secret Sister on Netflix?
No, Secret Sister is not on Netflix in United States as of August 2026.
Is Secret Sister on Amazon Prime Video?
No, Secret Sister isn't on Amazon Prime Video in United States right now.
Where can I watch Secret Sister for free?
Secret Sister isn't streaming in United States yet, so there's no way to watch it free at the moment.
How many seasons are in Secret Sister?
Secret Sister has 1 season in total (19 episodes). The series concluded in 2018.
Are all episodes of Secret Sister out yet?
Yes — all 19 episodes across 1 season of Secret Sister are out and available to stream.
Is there a Season 2 of Secret Sister?
No — Secret Sister ended after 1 season, so there is no Season 2.