Smallville :

Lex languishes in the sterile confines of Belle Reve Sanitarium, where his father has placed him. Scheming to escape and prove his sanity, Lex gets involved with three inmates who are also vengeful former residents of Smallville: murderous Van McNulty, Eric Summers, who once temporarily gained Clark's powers; and Ian Randall who can physically split himself into two people.

Meanwhile, Clark tries desperately to help Lex, who now knows Clark's secret identity. And Lana begins the painful recovery process after being trampled by a horse. She finds a kindred spirit in a determined fellow patient, Adam.