Son-nim-1 Cheo-beon-jjae I-ya-gi (2011)

A crazed and dangerous man barges into Eun Jin's home while she's alone. His actions and behavior are strangely similar to that of her husband. Eun Jin's neighbor comes by with rice cakes, and she too is taken hostage. The strange man is scary, but he reveals even scarier things about Eun Jin's husband.