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Two pregnancies, two babies, two troubled teens. Two psychologists hunting down the leader of a deadly cult. When Libby takes a stand against her abusive parents, Josh and George readily make her a part of their family. However, her parents may have been involved in something altogether more sinister, and now The Circle must draw together to protect both Libby and her friend Adam. Meanwhile, two unexpected guests seek sanctuary in Shaunna and Andy's new home, but that's only a part of it, and they soon realise something is very wrong. Someone is watching them... All this and more in Two By Two: Season Six of Hiding Behind The Couch.