Sanctuary (2008) - 1x04 - Folding Man

Dr. Helen Magnus suspects the work of an "abnormal" in a bizarre jewelry robbery that results in a fatal shooting. The thieves take only gold, leaving behind easily accessible diamonds, silver and precious gems. In addition to the selective choice of loot, the culprits make a mysterious getaway that baffles the police. It seems they were able to disappear from a room that had no escape, short of a tiny duct through which no one could possibly fit.