Home Sweet Home (怪物) is a 2005 Hong Kong horror film.
The movie is about a horribly disfigured madwoman (Karena Lam) who lives in the pipes and sewage system of a condominium estate. She mistakes a boy from a family who moved in recently for her long-lost son. She kidnapped the boy and the boy's parents went on a hunt to find the madwoman and rescue their son.
Taiwanese actress Shu Qi (Three Times) plays May, a young mother who moves into a new apartment complex with her family. But no sooner have they settled in than May's young son goes missing. It transpires that he has in fact been kidnapped by a hideously deformed woman (played by Hong Kong beauty Karena Lam, from Koma, in a mountain of grotesque make-up) who believes him to be her long lost son. May is forced into the ducts and vents of her apartment building to track down her boy, and confront this other terrifying, yet equally bereaved, mother. Directed by Soi Cheang (Love Battlefield) and co-starring Alex Fong and Lam Suet, Home Sweet Home thankfully disregards many of the staples of recent Asian horror to deliver an effective little film, capable of providing as many genuinely emotional moments as effective chills.