The letters "VFD" has a recurring presence in Netflix's "A Series of Unfortunate Events." Here's everything you need to know.

VFD is also discovered inside Count Olaf's mysterious ankle tattoo. The three letters together form an eye, a symbol that the children seem to see everywhere they go.

The presence of the VFD's all-seeing eye means that either that the Baudelaires are safe or that they are in grave danger – a fittingly foreboding symbol for a series as morose as this one.