Why Did Andy Nesmith Steal the MI5 Files? | Slow Horses Season 6 Explained

Why did Andy Nesmith steal the MI5 files in Slow Horses Season 6? In Episode 2, “Daddy Issues,” Andy Nesmith is revealed to have stolen a physical file from the Park containing the identities of people who had worked at Slough House. But Nesmith wasn't acting alone. He had been working with Frank Harkness, who was hired by Damien Cantor to obtain the file. The theft becomes much more important when Jackson Lamb discovers that the digital records connected to Slough House have also disappeared. That means the physical files may be the only way to identify former Slough House agents. So why did Damien Cantor want the files? And why was Frank Harkness willing to kill Andy Nesmith after the job was completed? This video explains why Andy Nesmith stole the MI5 files, who hired him, why Frank Harkness killed him, and how the stolen Slough House records could be connected to the mysterious attacks on former agents. Spoiler warning for Slow Horses Season 6 Episode 2.