This episode is the first in the Miracle Day series to refer to the Doctor.
In the Ellis Island scene, Jack astonishes Angelo Colasanto with the instantaneous change of name on the visa. Colasanto at first thinks it must be magic. Jack responds, "It's not magic. Technology. Sometimes they're indistinguishable."
This is a highly popular science fiction quote, Clarke's Third Law: "Any sufficiently advanced technology is indistinguishable from magic."
This is a highly popular science fiction quote, Clarke's Third Law: "Any sufficiently advanced technology is indistinguishable from magic."
This episode takes place from July 4, 1927 to 1928 and in March 2011.
Even though it is extremely brief, this episode is the first Miracle Day episode to have anything in its storyline reminiscent of what Torchwood was known for.