<P> Absent: Jessica Szohr as Vanessa . </P> <Tr> <Th> 79 </Th> <Td> 14 </Td> <Td> "Panic Roommate" </Td> <Td> Andrew McCarthy </Td> <Td> Jake Coburn </Td> <Td> February 7, 2011 (2011 - 02 - 07) </Td> <Td> 1.62 </Td> </Tr> <Tr> <Td_colspan="7"> <P> Blair enlists Nate's help to win over her high - strung boss, Epperly, at W magazine . Meanwhile, Damien stirs up more drama when he begins playing Eric and Serena against each other in an attempt to get back at Ben . Chuck finds himself torn between business and pleasure with Raina . English band Florence and the Machine performs an acoustic version of "Cosmic Love". </P> <P> Absent: Jessica Szohr as Vanessa . </P> Title reference: The 2002 film Panic Room and the 2011 film The Roommate . </Td> </Tr> <P> Blair enlists Nate's help to win over her high - strung boss, Epperly, at W magazine . Meanwhile, Damien stirs up more drama when he begins playing Eric and Serena against each other in an attempt to get back at Ben . Chuck finds himself torn between business and pleasure with Raina . English band Florence and the Machine performs an acoustic version of "Cosmic Love". </P>

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