Two Rivers Mansion is reportedly haunted by several entities, most notably the "Lady in Black" or "Mary Louise McGavic," who is known for playful pranks like manipulating lights and doors. Other paranormal activity includes disembodied footsteps, laughter, orbs, flickering lights, items moving on their own, and the intense scent of roses. The mansion is considered a highly active paranormal location and is often included in haunted tours and investigations. Disembodied footsteps, crowds laughing, giggling, and whispers are frequently reported. Orbs of light, flashing white lights, and figures seen in windows are common. Doors have been seen unlocking and opening by themselves, items disappear and reappear, and there are reports of a distinct smell of roses. This is the most famous spirit, believed to be Mary Louise McGavic. She is known for mischievous pranks, such as unscrewing light bulbs, manipulating the water system, and switching lights on and off.