Overview: Tim's world is rocked when Dawn turns up at the office to say hello. Despite a stern warning from Gareth and wise words from Keith in Accounts, Tim can't help but get his hopes up again. Meanwhile, David Brent has been using the services of a dating agency and, in between making celebrity appearances in nightclubs, he meets up for drinks with a rather disappointing selection of single women. The office Christmas party kicks off like any other but there are a few surprises in store...