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First telecast February 5, 1994, this episode is an emotional showcase for Dr. Beverly Crusher. Not long after attending the funeral of her grandmother Felisa Howard, Dr. Crusher begins to experience curious and bizarre happenings. All evidence indicates that she has fallen under the spell of Ronin (Duncan Regehr), the Howard family's resident ghost. "Sub Rosa" was scripted by Brannon Braga, from a story by Jeri Taylor.