4bia: Vietsub

(also known as ) is a seminal 2008 Thai horror anthology that features four spine-chilling stories, each directed by a prominent filmmaker. The title is a play on the word "phobia," highlighting its focus on primal fears through four distinct segments. The Four Segments

Runtime: ~120 minutes.

The title 4bia plays on the number 4 (สี่ / sì) sounding like “see” – and bia meaning “fear” or “horror”.

Plot: On an airplane, tensions rise when a passenger suspects another carries a deadly secret; paranoia and claustrophobia lead to escalating horror.
Themes: Fear of strangers, confined-space dread, guilt and confession motifs.
Notable elements: Tight, suspenseful direction; effective use of limited setting.

"Anh ở trong ảnh suốt mà" (You were in every photo) – used when someone misses an obvious clue.
"Ai ngồi giữa?" (Who’s sitting in the middle?) – asked randomly to unnerve friends.