Filmmaker Kurt Kuenne set out to eulogize his friend Andrew Bagby — a 28-year-old doctor who was murdered in 2001. When the killer announced that she was pregnant with Bagby’s son, Kuenne turned his film into an open letter addressed to the boy. “My movie now took on a whole new meaning,” Kuenne explains in a voice-over. “I vowed to collect every memory for you before they were gone.” But one shocking twist was yet to come. We’re not giving it away here, but we will tell you to brace yourself — and keep those tissues handy.