Robert Kirkman, writer (The Walking Dead) Limited Signing - Drawing for Line Tickets to be held Thursday at 9:00 am in the Autograph Area Robert Kirkman, writer (The Walking Dead) Limited Signing - Drawing for Line Tickets to be held Saturday at 9:00 am in the Autograph Area Robert Kirkman, writer (The Walking Dead) Limited Signing - Drawing for Line Tickets to be held Sunday at 9:00 am in the Autograph Area