Just when Lois is about to break it to Clark that she knows his secret identity, Isis happens. Tonight’s episode of the CW’s Smallville sees the Egyptian goddess borrow Lois’ body. Erica Cerra (pictured above) of SyFy’s Eureka will also share the role of Isis with Erica Durance. Cerra guest stars in a double role of Adrianna Tomaz and Isis. Do we detect a pattern of hosts in the selection of these beautiful brunettes?

[More after the jump]

[Above: Erica Durance as Isis]

Smallville: Synopsis of “Isis” (Season Ten, Episode Five)

LOIS DECIDES TO TELL CLARK SHE KNOWS HIS SECRET — Lois (Erica Durance) decides to tell Clark (Tom Welling) she knows he’s The Blur, but she accidentally activates an ancient artifact that transforms her into the Goddess Isis, complete with superpowers of her own. Oliver (Justin Hartley) and Clark reluctantly decide to ask Tess (Cassidy Freeman) for help with Lois…… meanwhile, after Cat Grant (guest star Keri Lynn Pratt) witnesses Lois as Isis using her superpowers, she decides Lois is the Blur and sets out to prove it. James Marshall directed the episode written by Genevieve Sparling.

Smallville: Promo for “Isis”

Smallville: Sneak Peek at “Isis”

Watch Smallville on the CW, Fridays at 8/7C.

[Source] The CW