Abbi makes a Kafkaesque trip to a remote and bizarre package center on the improbably named North Brother Island. North Brother Island is a real place, a small island in the East River close to Rikers Island (New York City's main penal complex) and the Bronx. From the mid-1850s into the 1930s, there was a quarantine hospital on the island (its most famous patient was Mary Mallon, better known as "Typhoid Mary"). Between the 1940s and the mid-1960s, the island housed a number of other facilities, including a drug rehab center for adolescents that was shuttered after allegations of corruption. North Brother Island is now uninhabited (by humans); it is a bird sanctuary. there is also a South Brother Island, which has been undeveloped and uninhabited since the early 1900s.