An easygoing actress who has created a career out of playing a fictional version of herself, Katie Featherston is the onscreen constant in the highly successful and reliably unsettling "Paranormal Activity" horror-film series. After college, the native Texan headed to Los Angeles and found her big break when she was cast as a main character in the inventive low-budget supernatural thriller "Paranormal Activity," which met with huge buzz upon its 2009 release. The significant box-office returns on the movie led to a steady stream of sequels, all featuring Featherston in some capacity. The franchise's mastermind, Oren Peli, also brought her aboard on episodes of his mysterious television series, "The River" (ABC, 2012), but the show was quickly cancelled. Although Featherston has appeared elsewhere, she has primarily thrived in the relative comfort zone of Peli's eerie productions.