<Tr> <Td_colspan="2"> ← Previous Season 1 Next → Season 3 </Td> </Tr> <Tr> <Td_colspan="2"> List of Brooklyn Nine - Nine episodes </Td> </Tr> <P> The second season of the television sitcom Brooklyn Nine - Nine premiered September 28, 2014 on Fox and ended May 17, 2015 with 23 episodes . </P> <P> Jake returns to the precinct after going undercover to help take down the mafia, but is discouraged when one mobster manages to escape . He then begins a relationship with defense lawyer Sophia Perez, which ends based on their professions . Holt begins a battle of wits with Deputy Commissioner Madelyn Wuntch that culminates in Wuntch making Holt the head of the NYPD Public Affairs Division . Charles and Gina's affair is exposed, after which Charles' dad and Gina's mom get married . Rosa begins a relationship with Holt's nephew Marcus . A relationship blossoms between Jake and Amy during an undercover mission . </P>

When does season 2 of brooklyn nine nine start