NBC has acquired “Persons Unknown,” another international co-production from Fox TV Studios.Chris McQuarrie is behind the show, along with Remi Aubuchon and Heather McQuarrie. Show revolves around strangers who are imprisoned inside a small ghost town. Fox TV Studios is producing with Italy’s RAI and Mexico’s Televisa. It reps the third international co-prod coming from FTVS, following “Mental,” which wound up on Fox, and “Defying Gravity,” which is about to launch on ABC. The “Persons Unknown” cast includes Jason Wiles, Daisy Betts and Alan Ruck. FTVS produced 13 episodes of “Persons,” which was originally developed at Fox, and then later at Sci Fi channel.