【请教,这段英文怎么翻译?原文是《电锯惊魂》的影评,我看的一头雾水"Saw,"afilmthatwasoriginallyplannedforastraight-to-videoreleasebutafterreceivingpositivenodsattestscreenings,wasfinallygiventhegreenli】

　　请教,这段英文怎么翻译?原文是《电锯惊魂》的影评,我看的一头雾水

　　"Saw,"afilmthatwasoriginallyplannedforastraight-to-videoreleasebutafterreceivingpositivenodsattestscreenings,wasfinallygiventhegreenlightinOctober2004-justintimeforHalloween."Saw"containsoneofthethoseplotsthatshowsyoueverythingit'sgotupitssleeve,thendoubles-backonitselfthree-fourthsofthewaythroughandrevealssomethingentirelynew.