The Trouble-Makers(2003)

Szeto Chun Yat, a young businessman, has recently returned to Hong Kong to open a branch of a Japanese company. To save money, he rents a flat to share with Carly, a lovely but unemployed fashion designer. The two hit it off as friends, and Szeto hires her to handle the cooking and cleaning while she looks for work. However, odd things begin to happen - Carly starts sleepwalking and speaking like a ghost. Does the house have a haunted history, or is Carly just playing a prank on Szeto?