"Thank you...For coming with us on this journey," Lincoln wrote in his letter. "For the nine years of fear, heartache, anger and, let's face it, guts you've shown by making it through these 115 episodes and counting. And for services to journalism that go way behind any civilised levels of human endurance. For understanding that despite the high volume of undead, this is actually an ongoing story about what it is to be alive." ALSO: Watch scenes from Rick Grimes' last episode.