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Inner Sense is an ability or sixth sense possessed by person who can hears voices that help guiding them. They can also provides the people who possess this ability with visions of the past and future events, such as Premonitions and to see Ghostly spirits (In the case of Miss Parker). Three people are known to have this ability is the late Catherine Parker and her children Miss Parker and Ethan. It's unknown if Miss Parker's twin brother Lyle has it.