Complete story — includes the ending
The Fringe team try in vain to communicate with Michael, the Observer child. They turn to Nina Sharp, who takes them to a secret Massive Dynamic lab, where she tries to read Michael's thoughts using a mind-computer interface. It does not work, and Nina suggests using a second interface to allow Michael to read their thoughts. By the time they acquire it, Observers led by Captain Windmark have tracked Nina. When they find her in the lab, Windmark starts to probe her and explains that Michael is a genetic anomaly scheduled to be killed. Using the gun of a Loyalist, Nina kills herself to prevent her mind being read. When Olivia, Peter and Walter return to the lab, they find Nina's body and Michael, who survived by hiding in a secret compartment. They mourn their loss. Back at the Harvard lab, Walter establishes communication with Michael, first with and then without the devices. The team learn from him that Donald is September.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Fringe season 5. HTML formatting and reference markers removed. · Content license