Snowfall 4x04 "Expansion" Season 4 Episode 4 Promo Trailer HD - Franklin's missteps put Leon in the crosshairs, resulting in an unexpected reconnection. Teddy faces fallout from Tijuana. Irene’s investigation has a promising new lead. Franklin tries to appease Cissy, as her involvement in his business causes friction with Alton. Written by Hiram Martinez; directed by Greg Yaitanes.