Actor Jang In-sub is starring in the new JTBC drama "Only One Person". "Only One Person" is about a terminally ill woman and a man with nothing to lose getting involved with a murder and becoming the most precious "Only One Person" to each other, A Hard Day, Action Hero, Find Me in Your Memory, Justice, Mrs. Cop, Only One Person, Rugal, The Merciless, The Phone, Two Cops, Jang In-sub