*After evacuating a science team on Nervala IV, Lieutenant Riker was beamed back up to the U.S.S. POTEMKIN. Unknown to Riker, an exact duplicate of him was reflected back to the planet's surface, where, blocked by the planet's distortion field, he remained marooned. It was not until the U.S.S. ENTERPRISE visited eight years later that the dupicate was discovered. The rescued Lieutenent Riker chose to use his middle name of Thomas, to differentiate between them. *Source: Back of card