Desperate Mrs. Seon-ju

There's nothing in your head but... Pi Seon-ju? (1x74)

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Woo-sang confesses about Chu-ah's wrongdoing, and Seon-ju's family and Sang-ah's family meet again at the police station. Another of Chu-ah's misdeeds is revealed at the station, riling up Seon-ju's family even more. Meanwhile, Sang-ah becomes shocked at the settlement amount suggested by Seon-ju.