My Secret, Terrius

A woman named Go Ae-Rin loses her husband. Along with her neighbour Kim Bon, who is a NIS agent, they discover the truth behind her husband's involvement in a huge conspiracy.

My Secret, Terrius (2018) is a South Korean conspiracy thriller series created by Kang Dae-sun for MBC. Across one 32-episode season, it follows Go Ae-Rin (Jung In-sun), a widowed single mother whose quiet life is upended after her husband's death, and Kim Bon (So Ji-sub), an NIS intelligence agent living next door who becomes her unlikely ally. Together they dig into the truth behind her husband's entanglement in a sprawling conspiracy, and each episode peels back another layer of hidden loyalties, covert operations and buried family history. The engine is simple and propulsive: a grieving woman who wants answers, a secret agent who must protect his cover, and powerful people who would rather the truth stay buried. Principal supporting roles include Son Ho-jun, Im Se-mi and Seo Yi-sook. The show mixes the emotional texture of a Korean domestic drama with the tension of a spy thriller, producing a register that is melancholic, tense and quietly hopeful. Fans of Vincenzo, Signal and Big will find resonance in its blend of intrigue, personal grief and secret identity. Its single completed season makes it a contained, binge-friendly watch.

Audiences rated the single season positively, praising its engaging conspiracy plot and the lead pairing's chemistry.

• Vincenzoshared korean thriller tone, conspiracy plot, and secret agent protagonist
• Signalshared korean television conspiracy and government agency intrigue with a domestic emotional core
• Bigshared mystery and hidden identity structure with a grieving protagonist uncovering a larger conspiracy

Created by

Kang Dae-sun

Release Date

2018-09-27

Episode runtime

30 min

Rating

7.6 / 10 (145)

What is My Secret, Terrius about?

A widowed mother and her secret-agent neighbour uncover the truth behind her husband's role in a vast conspiracy.

What is My Secret, Terrius like to watch?

Ember's analysis rates the pacing of My Secret, Terrius as brisk, its intensity as moderate and its storytelling as layered.

Is My Secret, Terrius violent?

Only mildly. Ember rates the violence in My Secret, Terrius as mild.

What did critics think of My Secret, Terrius?

Audiences rated the single season positively, praising its engaging conspiracy plot and the lead pairing's chemistry.

Which shows are like My Secret, Terrius?

Shows with a similar feel include Vincenzo, Signal, and Big.

How long is My Secret, Terrius?

My Secret, Terrius: 1 season, 32 episodes.

Is My Secret, Terrius still running?

No, My Secret, Terrius has ended.