: Earlier in the finale, young Cal Stone disappears after touching the tailfin at Eureka. In the episode's final moments, a teenage version of Cal (roughly five years older) appears by his dying mother’s side, telling her, "I know what we have to do now". Production & Impact
: Having become obsessed with the idea that baby Eden is her "guardian angel," Angelina Meyer stabs Grace Stone and kidnaps Eden. This event marks a major turning point in the series' antagonist arc.
: The episode was directed by Romeo Tirone and written by series creator Jeff Rake and Matthew Lau .
: Shortly after this episode aired, NBC initially canceled the series. However, the massive cliffhangers and fan support led to Netflix picking up the show for a fourth and final season to resolve the mysteries. Mayday (Part 2) | Manifest Wiki | Fandom