"Mercy" The Walking Dead episode Rick and the Militia use warning shots to call out Negan at the Sanctuary. Episode no. Season 8 Episode 1 Directed by Greg Nicotero Written by Scott M. Gimple Featured music "Another One Rides the Bus" by "Weird Al" Yankovic Original air date October 22, 2017 Running time 47 minutes Guest appearance(s) Jason Douglas as Tobin Jordan Woods-Robinson as Eric Raleigh Kenric Green as Scott Dahlia Legault as Francine Mandi Christine Kerr as Barbara Kinsley Isla Dillon as Six Year-Old Judith Peter Zimmerman as Eduardo Karen Ceesay as Bertie Jeremy Palko as Andy Brett Gentile as Freddie Anthony Lopez as Oscar Cooper Andrews as Jerry Kerry Cahill as Dianne Daniel Newman as Daniel Carlos Navarro as Alvaro Jayson Warner Smith as Gavin Traci Dinwiddie as Regina Avi Nash as Siddiq