My Secret Terrius is a 2018 Korean-language show created by Kang Dae-sun written by Oh Ji-young and directed by Park Sang-hun and produced by Namkoong Sung-woo under the banner of MBC in collaboration with Mong-jak-so Co. and Ltd. Go Ae Rin is a single mother who after unexpectedly losing her husband, gets involved in a spy war. My secret terrius stars So Ji-sub in the title role along with Jung In-sun, Son Ho-jun and Im Se-mi in supporting roles. The show has a running time of 35 minutes for each episode. The show has a total of 32 episodes. Distribution rights for the series were acquired by MBC. Go Ae Rin is a single mother who after unexpectedly losing her husband, gets involved in a spy war.