http://api.tvmaze.com/singlesearch/shows?q=the-knick&embed=episodes
returns
{"id":12831,"url":"http://www.tvmaze.com/shows/12831/nick-simon-the-d... & Simon, the Dream",
You're including a hyphen in your search which is causing it to not find it.
If you search without the hyphen you'll get the correct result:
