As a child, the author loved reading more than playing with friends; in the end, she grew up to become a writer. While in college, at the young age of 20, her work was selected in a Spring Literary Contest, which launched her career as an author. She also became involved in TV broadcasting.

When Suh turned 30, she began writing for TV dramas and mystery novels; her somewhat shockingly titled Thirty Ways to Kill Your Husband garnered her a Spring Literary Contest award. Since then, for over 20 years, she has worked in various media including TV, mystery novels, and film before establishing herself as a professional mystery author. She prefers Miss Marple over Sherlock Holmes, and psychological crime thrillers over tricks. These preferences are evident in her works.

Suh’s major works include The Night Your Star Disappeared; The Only Child; and the short story collections A Welcome Murderer; Thirty Ways to Kill Your Husband; and The Orbit of the Stars. For The Doll’s Garden, she received the 2009 Korea Mystery Literature Award. Some of her works including A Welcome Murderer and Thirty Ways to Kill Your Husband have been adapted for television, film, and theater.