House on Haunted Hill (1999)

Evelyn: You know if you really love me, you'll find a way to drop dead in the next three seconds.
Stephen Price: Finding ways for me to die is really your deal, isn't it Eveline? Let's not forget the OJ knife with the not-quite-retractable blade. Your Jim Jones Kool-Aid was exactly that.
Evelyn: Accidents, all accidents until proven otherwise.

Trivia: If you wait until after the credits roll, you get to see what happens to the souls of the people who died that night - i.e. Evelyn and Steven.

Question: Eddie reveals that he's not even a direct descendant of the original staff but was actually adopted. Why would the Darkness still try to kill Eddie even though he had no ties to the staff or institute?