Smallville 9x17 - "Upgrade" - Lois Lane chloroformed

Lois Lane (Erica Durance) is able to locate Chloe and Tess's laboratory. Lois walks in and confronts Tess about what's been done to John Corben. Chloe suddenly appears behind Lois and chloroforms her.

The scene happens a bit fast, but we do see Lois struggle for a bit and it ends with a shot of her sleeping face. Decent scene.