THE PURGE 9 p.m. on USA. James DeMonaco’s “Purge” films centered on the 12-hour period when all crime is legal in a near-future dystopian America, a national holiday celebrated as an extreme exercise in stress relief. But this anthology series, based on the films, explores what the Purge world looks like on the other 364 days of the year. In Season 2, the show examines how one Purge night affects the lives of four interconnected characters over the course of the year, and how those events influence how they prepare for the next one.

TREADSTONE 10 p.m. on USA. For those still lamenting the end of the Jason Bourne franchise, this new spinoff series delves deeper into the clandestine black-ops program that created that C.I.A. assassin. The show follows various sleeper agents, programmed to become superhuman killing machines (action sequences abound), as they awaken across the world and set off to complete their missions. But as they begin to discover their powers, they also start questioning their mysterious origins.