Episode 16: ... I Lose Myself -

Morgan finds Martha, who has been bitten by a walker. She attempts to force him to kill her to prove that he is "weak," but he eventually kills her reanimated self after she dies from infection.

It was the first season finale of the series that did not feature original lead characters Madison, Travis, or Nick Clark. Episode 16: ... I Lose Myself

The phrase is the title of the 16th episode of Fear the Walking Dead (Season 4 finale), which originally aired on September 30, 2018. Episode Overview Morgan finds Martha, who has been bitten by a walker

For a deeper look into the events and character arcs of this season finale, you can watch this review: Morgan finds Martha