来自出版商的介绍：

进入帝王谷并解开法老的秘密吧！面具之下是时间守望的第三扩展。这是一场关于时间旅行、现实交替、无限发现的合作游戏。这一次,你和你的时间特工必须回到古埃及避免会威胁到稳定未来的犯罪。

面具之下的142张新卡牌将引领你进入一个充满奇迹与阴谋的时代，第一次当你探索这个古老的世界时，你将能够利用你团队中的瞬时传输设备瞬时转移！

Enter the Valley of the Kings and unravel a pharaoh's secret. Under the Mask is the third expansion for T.I.M.E Stories, the cooperative game of time travel, alternate realities, and unlimited discovery. This time, you and your fellow temporal agents must travel back to ancient Egypt to solve a crime that threatens to destabilize the future.

With its 142 new cards, Under the Mask immerses you in an age of wonder and intrigue, and for the first time as you explore this historical world, you'll be able to take advantage of the instantaneous transfers permitted by your team's Instantaneous Transfer Device!