Rock star Marcus Keen (Riley Smith) makes demands on Rayna as she struggles to tend to those around her. Layla and Jeff get into a lover’s quarrel. Jeff arranges for a journalist to shadow Juliette on tour, but after another emotional setback, she leans on pills and alcohol to get through her days, and Zoey (Chaley Rose) returns to see Scarlett, on “Nashville” Wednesday, October 14th on ABC.