Night 5

The 5th Night is the fifth and the last playable night that is important to the main campaign of Five Nights at Freddy's. So in the 5th Night, the player will be greeted with a phone message of deep voices, then comes the screetch, although it seems to cut off of a way through the screech three times. This night can be extremely hard, even if the player has a certain level of skill, because the animatronics are very active, and Foxy will often suck up the power by banging on the left door. This can usually lead to a power outage, having you die from Freddy.

Note: the phone call is not from the phone guy. We know for sure that it is an animatronic, though. People are thinking that is was Freddy.