The episode further reveals the looming threat of Immortus , the season's primary villain, through Dr. Janus's actions to harvest Rita's emotions. Community Sentiments

REVIEW: Doom Patrol – Season 4, Episode 3, "Nostalgia Patrol"

“This was by far the best episode since early season 2. Absolutely loved it.” Reddit · r/DCDoomPatrol · 3 years ago

The story focuses on a retrospective festival for Rita Farr (Elasti-Woman) that turns out to be a psychological trap set by Dr. Janus .