Marshall Explains Harry Potter's Invisibility Cloak
Marshall compares Robin's engagement ring to Harry Potter's invisibility cloak, explaining that Harry uses the cloak to sneak around Hogwarts unseen.
TV show · 1 reference
Harry Potter references in How I Met Your Mother
Our community has spotted 1 Harry Potter reference in How I Met Your Mother. Browse by season and episode, then open a discovery for its details and available clip.