Although Ghosts season 4 is set to introduce a famous face to the Woodstone B&B, there is really only one actor who could do the role justice. The ghosts of CBSs Ghosts have a wild, storied history. From Alberta flirting with Al Capone to Flowers part in the 60s counterculture movement, the Woodstone Mansions inhabitants have been present at many major historical moments. Ghosts season 4, episode 2, Sams Dad, made this all the more obvious when the outing revealed that Isaac was once friends with Benedict Arnold, but knew nothing of his later infamy.