據瞭解目前saw4已經完成拍攝工作，檔期定為十月二十六號。導演仍然是 Darren Lynn Bousman，編劇是檔 Marcus Dunstan 和 Patrick Melton。
目前根據網路上的劇情大綱，第四集的劇情將會是延續第三集中的劇情。
唯一活下來的Jeff將要設法救出他的女兒還有想辦法在死之前逃出去。找到Jigsaw遺留下來的另一個錄音帶後，Jeff瞭解到這裡還有一片新放入的拼圖，他必須要在一切太遲之前，解決一切...
Jigsaw still haunts the living in Saw IV、forcing them to appreciate life、or face death. As a continuation of Saw III、Jeff must find his daughter and escape the building to which they are confined before they both die. After finding another tape of Jigsaw、Jeff realizes there may be a newly added piece of the puzzle that he must decipher before it's too late.
