The four screen captures from the ep and their captions:
[spoiler]Petofi denies having ever seen the music box.[/spoiler]
[spoiler]Aristede tries to ingratiate himself back into Petofi's good graces.[/spoiler]
[spoiler]Petofi realizes Julia cannot die.[/spoiler]
[spoiler]After Beth has a vision of Quentin in 1969, Petofi realize that Quentin exists in that time.[/spoiler]
Of course, if you come by a few days later, it would be a bit harder, but I suppose you could use the episode number to locate the appropriate Robservation.
The easiest way to find an episode by number is to go to the Robservations board and then enter the episode number in the search box, which is located the header in the bloodred theme:
and above the topics listing in Variations on Blue: