It is a special episode and under normal circumstances it would be in the Specials. However, we have to follow the original episode order and ABC Family made the decision/mistake to air it as Episode 13.

I understand the reasoning for doing this; however, on the DVD release for Season 5, this particular item is shown as a Special on Disc 3, and 25 episodes for the whole season (not including the special).

Just something to consider.

There's an episode group with the DVD order: https://www.themoviedb.org/tv/31917-pretty-little-liars/episode_group/5ad53ec49251415dbd009176

I appreciate that also. I guess I'm just confused at what defines a "special" when an episode is broadcast that is not part of a regular storyline, particularly when the episode description indicates things like "Q&A with the cast" and "behind the scenes look at so-and-so". For example:

https://www.themoviedb.org/tv/31917-pretty-little-liars/season/0/episode/10

It was broadcast on TV, however, it is not part of the regular storyline, so it was included as a Special instead of Season 05 Episode XX.

And if the original broadcast of a special was originally, incorrectly, broadcast as a Season episode instead of a Special episode...wouldn't it be better, as a community, to correct the mistake?

@VonSupponnatime We follow the original network. "We Love You to DeAth" is officially Episode 13 of Season 5. "5 Years Forward" however is a S6 special. It's all explained in the TV Bible: https://www.themoviedb.org/bible/tv/59f73eb49251416e71000026