Based on the Belgian film The Memory of a Killer (2003), directed by Erik Van Looy (known for The Loft (2014) written by Carl Joos (known for Cordon (2014), The Treatment (2014) and The Broken Circle Breakdown (2012)).
Most panoramic El Paso skyline shots in this movie are accurate; however, the tall, white modern high rise does not exist and was implanted into the movie.
Both Liam Neeson (in this movie) and Guy Pearce (who plays an FBI agent) in Memento (2000) wrote reminders on themselves to compensate for their loss of memory.
Aside from Harold Marques (Harold Torres) and Guy Pearce, all the other main characters are European (Mainly from the UK) . No American-born actor appears in the movie.