The screenplay for this film was featured in the 2009 Blacklist, a list of the "most liked" unmade scripts of the year.
Slipknot percussionist and founder Shawn Crahan has a small, uncredited cameo as an Iraq War Veteran being interviewed by a reporter at the end of the film. He and director Mark Neveldine are friends and previously worked together on Officer Downe (2016) starring Kim Coates.
In Spain was released in 28 theaters / Widest release: 29 theaters.
The film was only released in dubbed version, but was a premiere (November 2015) in Barcelona (Phenomena) in subtitled version.