Elle: Charon was the Greek ferryman of the dead.
Clara has a picture of Charon in her room and also leaves a creepy phone message about him. In Greek mythology, Charon steers the ferry on the river Styx, which takes the dead to the underworld of Hades. The old tradition of putting coins over a dead person's eyes is supposed to have originated with this myth. The coins were meant to pay the ferryman.