The Assassin Queen

From the back of the adventure: "Time Guard Raymond Fraiser mysteriously disappeared from assignment in 3157 A.D. The only clue to his whereabouts leads here-to India's Sakhara Valley, October, 1856. So begins your mission-a routine lost and found search. But why did Fraiser abandon his assignment to come here? Who are the strange characters that keep appearing in the valley? And who is reviving the outlawed worship of Kali?"