Rick Riordan said this quote
“ Hazel frowned. Why that one?You don't see the ghost? Frank asked.Ghost? Nico asked.Okay... if Frank was seeing a ghost that the Underworld kids couldn't see, something was definitely wrong. ”
“ Hazel frowned. Why that one?You don't see the ghost? Frank asked.Ghost? Nico asked.Okay... if Frank was seeing a ghost that the Underworld kids couldn't see, something was definitely wrong. ”