A storm is coming, and its name is crack. Set in 1980s Los Angeles against the infancy of the crack cocaine epidemic and its ultimate radical impact on the culture as we know it, “Snowfall” follows numerous characters on a violent collision course, including Franklin Saint (Damson Idris), a young street entrepreneur on a quest for power; Gustavo “El Oso” Zapata (Sergio Peris-Mencheta), a Mexican wrestler caught up in a power struggle within a crime family; Lucia Villanueva (Emily Rios), the self-possessed daughter of a Mexican crime lord; and Teddy McDonald (Carter Hudson), a CIA operative running from a dark past who begins an off-book operation to fund the Nicaraguan Contras. See how crack began with all six seasons of this gripping drama.