Friday the 13th
(2009)

Clay (Jared Padalecki) and his sister Whitney (Amanda Righetti) are the only survivors.

Jason (Derek Mears) is about to send Clay through a wood chipper, when Amanda distracts Jason with his mother's pendant. Jason is then hung by a chain, which is fed through the chipper. Jason briefly breaks free, but is still trapped by the chain. Whitney then stabs Jason with his machete and pushes him into the chipper.

Clay and Whitney dump Jason's body into Crystal Lake and everything seems back to normal. However, the final shot sees Jason jumping out of the lake and grabbing Whitney.

Thanks Sean K!