After a spate of break-ins Mattie learns that the robbers are using Facebook to plan their raids by finding out what houses might be empty and when. To trap them, Mattie convinces Sullivan that he should invent a grand aunt and create a Facebook event to celebrate her birthday, believing that the robbers will target Sullivan's house on the night of the fake party.
To the duo's surprise, there's an enthusiastic response to the party of the fictitious aunt and Mattie is forced to pretend to be 'Aunt Nancy' at the celebrations. At the Credit Union, where the party is taking place, Mattie and Sullivan are delayed by well wishers and Sullivan's house is broken into. With Plan A scuppered, Mattie resorts to Plan B which involves killing off 'Nancy' and announcing her 'wake' on Twitter. The tweet reveals that the Credit Union will be closed as a mark of respect and that money will have to be left there over night. Sure enough, the tech savvy robbers strike again and, with the help of Sullivan and Phyllis, Mattie nabs them . eventually.
