Episode guide

S1·E4 Episode 4

Name: Episode 4
Released: 2026-07-17
Duration: 54 min
Cast: Kwak Dong-yeon, Choi So-yul, Moon Woo-jin, Choi Hyuk-joo, Noh I-jin

Episode: Season 1, Episode 4
Air Date: July 17, 2026
Runtime: 54 minutes
Score: 8/10 (7 TMDB votes)
Story Type: Core Character Arc

Core Aired July 17, 2026 54 min ★ 8.0/10 · 7 TMDB votes

Synopsis

Gu-cheon and Saeng-gang attempt to seal the pond spirit for good. Still suspicious about the crown princes' deaths, Gu-cheon returns to Saeng-gang.

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Guest stars

Kwak Dong-yeonCrown Prince

Choi So-yulSaeng-gang (child)

Moon Woo-jinKing (teen)

Choi Hyuk-jooLady Jang

Noh I-jinRoyal Concubine Han

Hwang Young-heeRoyal Noble Consort Choi

Hong Seo-junChief Eunuch Kim

Kim Ji-yulJi-yul

Lee Jae-junPrince In-ha

Jo DanPrince Yeong-an

Tae In-hoPrince Ik-sang

Frequently Asked Questions

When did Season 1 Episode 4 of The East Palace air?

Season 1, Episode 4 ('Episode 4') originally aired on July 17, 2026.

How long is Season 1 Episode 4 ('Episode 4')?

The runtime for this episode is approximately 54 minutes.

What happens in The East Palace Season 1 Episode 4?

Gu-cheon and Saeng-gang attempt to seal the pond spirit for good. Still suspicious about the crown princes' deaths, Gu-cheon returns to Saeng-gang....

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