‘Below’ average: Derivative action film is no underground hit

Say hello to Posh Spice Indiana Jones. Her actual name is Scarlett Marlowe (spunky Welshwoman Perdita Weeks, “The Tudors”). In the shaky-cam, “found footage” genre film “As Above, So Below,” Scarlett is a multilingual historian, archeologist, adventurer and symbologist with a black belt in Krav Maga. She also knows how to use ordinary cleaning products to reveal a secret message on the back of a