Roger (Louis Edmonds) is finally made aware of the Leviathan presence. Amy (Denise Nickerson) begins to suspect that the current Quentin Collins (David Selby) is the same person who had earlier tormented her in spirit form. After reading the Leviathan book -- which suddenly bursts into flames -- David (David Henesy) envisions the figure of a hanged man. This episode was first telecast on February 25, 1970.