'The Walking Dead's Jeffrey Dean Morgan & Lauren Cohan Break Down 'Dead City's Maggie-Negan Dynamic

'The Walking Dead's Jeffrey Dean Morgan and Lauren Cohan chat with ET's Will Marfuggi about their new sequel series, 'The Walking Dead: Dead City,' which follows their formerly at-odds characters, Maggie and Negan, forming a new relationship. 'The Walking Dead: Dead City' airs Sundays at 9 p.m. ET/PT on AMC, and streams on AMC+.