Radarr won't add a new imdb title

I can't get radarr to add https://www.imdb.com/title/tt27430909/ to the library.

Searching with imdb:tt27430909. When I try other imdb ids, it works fine. But this one won't work. Anyone know how to manually bring this into my libary.

FWIW, I actually bought this title off of his website. It is really inexpensive, so if you can afford it, I recommend buying it.