. "Father's Secret Study"@en . "Father's Secret Study is the first bonus level exclusively for the Xbox 360. The actual game name is Tomb Raider: Underworld: Beneath the Ashes. In it, Lara attempts to locate an artifact that her father left in the Croft Manor, it had the power to create and control Thralls."@en . . . "Father's Secret Study is the first bonus level exclusively for the Xbox 360. The actual game name is Tomb Raider: Underworld: Beneath the Ashes. In it, Lara attempts to locate an artifact that her father left in the Croft Manor, it had the power to create and control Thralls."@en . .