Toyman, connected to both Ollie and Lex. It is appropriate that Lex watches the Toyman through the eye of a doll.
Lex devises a diabolical plan to keep Clark and Lana apart. Lex himself is apparently dead at the end - killed by Ollie although the suspect is Schott.
Queen Industries and Luthorcorp have merged. It is amazing how much can happen before Clark becomes Superman.
I still think that there is an inconsistency. Chloe had been made to forget about Clark's abilities but now knows about them again.