Eastern State Penitentiary 'Al Capone heard a ghost in his cell' — reposting the version I grew up hearing

Not mine, this is the way my grandfather told it and I've never seen it written the same way twice so I'm logging his version. Eastern State Penitentiary, Philadelphia, opened 1829, the big radial-spoke prison that basically invented solitary confinement — they kept men in total isolation with hoods……