Whom did the Witch of Endor summon from the dead?

The prophet Samuel for Saul?

Jell8 scores again.

Notice in the story that when she saw the spirit of Samuel, she gasped with surprise. (That makes me suspicious that, even though she was a witch and engaged in the business of speaking to the dead, this was actually the first time this had happened. This may be the predecessor of the "900" psychic hotlines!)