"Eye Spy" is the fourth episode of the first season of the American television series Agents of S.H.I.E.L.D. Based on the Marvel Comics organization S.H.I.E.L.D., it follows Phil Coulson and his team of S.H.I.E.L.D. agents as they investigate a series of diamond thefts committed by a former S.H.I.E.L.D. agent. Wikipedia