Linda Kee

Erica, now officially in charge of the global Fifth Column, leads them in a high risk attack against Anna. Anna meanwhile, growing closer in her plan to destroy humanity, finds a major obstacle in a certain Live Aboard candidate. And Ryan sneaks back onto the Mothership to try and rescue his daughter. Recurring guest stars include JANE BADLER as Diana, MARK HILDRETH as Joshua, ONA GRAUER (Percy Jackson & the Olympians: The Lightning Thief) as Kerry Eltoff, Christopher Shyer as Marcus, Bret Harrison as Dr. Sidney Miller and MARTIN CUMMINS (Kyle XY, Shattered) as Thomas.

Karen grapples with her feelings as she, Alec and Vivian decide exactly how their relationship is going to work. A bad judgment call involving the kids puts Marc in the doghouse with April, driving her closer to Blair. Joss and Harry rebound from their painful break-up in different ways while Calista enacts revenge on a manipulative Luca.

When Mona discovers that her new boyfriend is living in his car, she sets out to prove that she's not so shallow that it makes a difference. Meanwhile, Phyllis puts her war with Big Dee Dee on hold to help her weather a health scare. Also, Dee Dee finds herself enjoying the attention of a neighborhood Peeping Tom .

Big Dee Dee takes Dee Dee to a fancy spa on Mother's Day, and Phyllis decides to take Mona to the same spa.