Opens with the quote, "Cherish those who seek the truth but beware of those who find it" by Voltaire.
Betty lives in apartment 502. This episode is season 5 episode 02
The episode's title references "a clear and present danger" which was a US Supreme Court decision on the First Amendment, Freedom of Speech, which stated when the amendment could be abrogated. The usual example prohibits yelling "Fire!" in a crowded theater as doing so would create panic.
It was revealed that Nick documented in one of the Grimm diaries the time that Monroe found the symbol of the scythe on his car after he got ambushed and beat up for helping a Grimm. ("Of Mouse and Man")
In one of the baskets that Monroe and Rosalee brought over to Nick's house, there were stuffed animals of a wolf and a fox. There was also a wolf and a fox on the mobile they made for Kelly's crib.