The Parkway Theater’s excellent series of double features continues with a pair of hot-weather chillers, “The Silence of the Lambs” and “No Country for Old Men.” Each is a superb, Oscar-winning adaptation of a bestseller by filmmakers who know how to meld excruciating psychological tension with visceral shock. Jonathan Demme’s disturbing “Silence” drew out Jodie Foster’s aloofness as FBI agent Clarice Starling. Anthony Hopkins became a major star as Dr. Hannibal Lecter, the genius psychopath Starling recruits to help solve a string of grisly murders. In “Country,” Joel and Ethan Coen tell a tale of drug deals, depravity and death in the Texas flatlands. Josh Brolin is gripping as a blue-collar Joe blinded by greed, Javier Bardem is the soulless killing machine who murders people on the flip of a coin, and Tommy Lee Jones is the veteran lawman who can’t comprehend the new level of viciousness polluting his jurisdiction. Watch these and sleep with the lights on for a week. (Parkway Theater, 4814 Chicago Av. S., Mpls., through July 18, 612-822-3030.)