Christian George (FBI Special Agent Yates) suffered a severe leg injury just prior to filming his scenes. The writers modified the script to incorporate his injury and then allowed the cast to ad lib lines.
The entire film was shot in under 50 filming days.
Brad Furman and Jess Fuerst have been writing the script for over 4 years as they both dreamed of creating an "action" movie with a twist.
The greater part (80%) of the film that is budgeted at 38 million euros will be shot in Thessaloniki and the rest in Drama, filming will continue to July 25.