As an important role in Saw, Shi Li's true identity has always been concerned. However, with the development of the plot, more and more clues point to Lacey. Lacey not only has similar appearance characteristics as Lishi, but also has the same special ability as Lishi.

In addition, the connection between Lacey and Sok Li also implies that they may be the same person. Therefore, according to the current clues and plot development, it can be inferred that the world in chainsaw fright is Lacey.