From the back cover:
The lich Lyzandred: a madman, an undead archmage, a survivor of the twin cataclysms that destroyed two great empires. His name invokes fear in the hearts of the smallest children, the bravest warriors, and the wisest sages. Like a malicious cat, the lich toys with all who stumble into his maze, tormenting them with strange puzzles and obscure riddles, monsters and demons, weird traps and dangerous magics. All who enter the crypt of Lyzandred find themselves scarred with his rune, proof of their visit—and of their folly.
But there is a method to the madness of Lyzandred, a purpose to his twisted games. If you're lucky, you might even live to learn about it.
The Lost Tombs series begins with Star Cairns (Volume 1) and concludes with The Doomgrinder (Volume 3). Each adventure is playable separately or they can be linked to form an epic-length story.