Stargazer. (Graveyard Keeper)

You had a dialogue with him about the key and he gave it to you? You have the inventory was not scored? Because if the inventory has no place Stargazer will drop the key on the ground.

There was a dialogue where he asked the skull. I brought him home and gave. More what was not.

Which version of the game?

It immediately gives you a key, you first need to do quests for him.

Try to go back to the morgue and ask Harry as you get home. He'll tell you about the Library, the portal and an Astrologer. After this, the Astrologer appears quest

Stargazer talks to me.