Overall, a fast moving episode that touches on Lex's past with bouts of delusion and how it impacts his present as Lionel tries to head off Lex's digging into his past (with Morgan Edge as an accomplice) in burning down a building for the insurance money, while murdering Lex's grandparents in the process. Chloe helps in providing some details of Lionel and Morgan's past involvement with the buidling fire. Lana gets hurt badly, probably multiple leg fractures from being trampled by a spooked horse (Lex got paranoid and threw Lana into the stable while hiding out at the Smallville stables for the night). Lex's paranoia gets worse and worse as he feels no one believes him, and only Clark is willing to prove that Lex isn't crazy, but the evidence to the contrary becomes almost overwhelming. In the end, after Clark does some more investigating and gets Lex's guard to confess (about drugging Lex slowly through his scotch to produce his delusional state). Clark tracks down Morgan Edge's whereabout, as does Lex. After a showdown between Lex and Edge, Clark shows up, but Edge is prepared with a string of kryptonite rocks and beats the crap out of Clark for a while, Lex gets the upper hand and shoots Edge, turns his attention to Clark, then Edge disappears, so Lex goes after him, and Edge tries to run Lex over as Lex shoots at the car through the windshield, but Clark pushes Lex aside and takes the full brunt of the car, and Lex finally sees what he has suspected all this time, that Clark does have super powers is pretty much indestructible. Edge is supposedly dead from Lex's shots (not sure yet). Lex is put into a mental institution by Lionel, currently no one would believe what he saw regarding Clark's powers because he's still so delusional. Lana is now convinced that bad things happen when she hangs with Clark, so she gives Clark the heave-ho for the time being. Clark is crushed.