Paul Davis is hearing some very strange noises in the night. He hears the clickety-click of a manual typewriter - as if someone is vigorously tapping the keys. The eerie sounds began soon after his wife, Charlotte, bought him a classic antique Underwood. But only Paul can hear the noise coming from downstairs; Charlotte doesn't hear anything unusual. Is Paul losing his mind? Maybe. Or is something really there? Eight months ago, he stumbled upon Connecticut's infamous 'Apology Killer' - a psychopath who forced his victims to typewrite personal apologies to him before he cut their throats - disposing of two mutilated bodies on Milford's Post Road. Most shocking of all, the killer was his colleague, someone he thought he knew. Paul's been seeing a therapist for months to recover from the nearly fatal encounter, but his nerves and short-term memory have suffered since the traumatic encounter. There's only one way to learn if the noises are real or a figment of his hyper-imagination. One night, Paul rolls a sheet of paper into the machine. The next morning, when he checks the page, there is a chilling message: 'We typed our apologies like he asked but he killed us anyway.' As he desperately searches to find a rational explanation for the note and the noises, Paul slowly begins to consider the unthinkable: The message is authentic, and the women butchered by his colleague are reaching out to him from beyond the grave.