The episode, titled "Last Day on Earth," begins with a dreamlike sequence of darkness and blurred lights that recur throughout the episode; ahead of the final scene, however, it becomes clear that the scene is located in the trailer where four characters - caught by The Saviours in the previous episode - are being held.
As the final scene begins, it becomes clear that these moments were actually POV shots coming specifically from someone inside that trailer (you see where the theory's going with this...).
100 Best Scottish Books of all Time Patrick Mac Gill’s autobiographical novel roams from the tenant farms of Ireland and the grinding poverty of Dermod Flynn’s childhood, to the byways and backroads of Scotland and the navvying life.
Leaving home at the age of 12 to seek work ‘beyond the hills’, Dermod is barely shod and fed, worked to exhaustion by a series of indifferent tenant farmers, and runs away to join the emigrants headed for Scotland in the hope of catching up with his sweetheart Norah Ryan.
character - namely Daryl; the POV shot clearly bases him in front of the doomed person.
Intriguingly, we don't really see where Glenn and Rosita are based in relation to the shot adding an air of ambiguity to the theory, but from what can be gathered, it posits Michonne as the most likely candidate to have been on the receiving end of Lucille.