Kim Ha-neul as Min Ji-won Nam Sang-mi as Su-in Ryu Jin as Park Jun-ho Jeon Hye-bin as Eun-seo Shin Yi as Mi-kyung Jeon Hee-ju as Yu-jung Lee Yoon-ji as Eun-jung Choi Ran as Su-in's mother Gi Ju-bong as Detective Kim Hae-sook as Ji-won's mother Greena Park as Yu-jung's friend Joo Da-young as young Su-in