KERNER, IAN
ELLAS LLEGAN PRIMERO
978-84-663-1694-1 / 9788466316941
It seems you're referring to (2009), which is often labeled as the 4th film in the series. There is no official "Final Destination 4.5" — no direct-to-video or theatrical half-sequel exists.
4/10 – only for death scene compilations or bad movie night.