While playing a friendly game of chess, it becomes apparent that Reed and Mayweather have been inhabited by two members of an alien species who intend to observe how humans react when faced with an imminent tragedy.

Beka's new boyfriend turns out to be more than she suspected. He will play an important role in the development of the original CommonWealth. Beka learns a secret that should help them if they can ever escape from Seefra.

When Cate and C.J. discover that Kerry has been e-mailing Bruno -- the boy she had a fling with in Europe -- they secretly try to snoop in her computer to find out what the two have been up to. But unbeknownst to them, Bruno is in the house and hidden in the attic by Kerry, while Bridget tries her best to talk her little sister out of doing something she may regret. Meanwhile, Jim discovers Rory's clandestine poker game and decides to deal himself in to teach Rory and his friends a lesson about gambling.

Stargate Command receives two disturbing bits of news; a replicator generated Carter exists, and that Fifth and the Replicators are headed to Earth. The replicated Carter tells Stargate Command she wishes to be destroyed by the disruptor weapon created by O'Neill. However, can the replicator Carter be trusted? Or is this some sort of trap set by Fifth. Either way, the team has no choice but to find out.

Monk ends up hiring a new assistant, Natalie, but she has been the subject of a brutal attack involving the attempted theft of...her daughter's beloved pet fish.

Sheppard attempts to rescue Weir and McKay and retake the city. Meanwhile Beckett, Teyla, and Ford try to navigate the storm and lend assistance.

Coming Soon...

Abs continues to ignore Nina & Ellen continues to try to get back into his good books which leads to Abs finally snapping at Ellen and throws her out into the streets. Sam continues to act very oddly and his mum Tess still oblivious to her son's odd behavior throws all her effort into getting Comfort the break she needs by jetting her off to Barbados to spend time with Fin's family. Meanwhile Bex thinks she's found Mr Right in Pete.