"American Dream Builders" (8 p.m., NBC): Nate Berkus hosts a new reality competition that pits two teams of designers against each other in a race to renovate a pair of similar-looking homes in the same neighborhood.
"Drop Dead Diva" (9 p.m., Lifetime): The soapy drama about an aspiring model killed in a car crash and brought back as a lawyer (Brooke Elliott) kicks off its sixth and final season with a two-hour opener. Guest stars for the end run include Rick Springfield, S. Epatha Merkerson, John Ratzenberger, Corbin Bleu and Jay DeMarcus of Rascal Flatts.
"The Walking Dead" (9 p.m., AMC): We're still catching our breath from the shocking events of last Sunday. Just hurry up and get us to Terminus and we'll be OK. Maybe. (For recaps of the show, go to www.mercurynews.com/tv).
"Girls" (10 p.m., HBO): The most consistently enjoyable and reliably funny season comes to a close with Hannah (Lena Dunham) receiving a piece of big news that could affect her writing career -- and her relationship with Adam (Adam Driver).
Also on Sunday: