Sequel to Echoes of the Well of Souls (not seen), itself a sequel to Chalker's original five-book Well World saga. For those unacquainted, the idea is that the Well of Souls contains the master control of the universe. Immortal, unchanging survivor Nathan Brazil is the Well's guardian, a duty he has lately shared with the now-estranged Mavra Chang. This time, each guardian is called alone to the Well, where they find changes--not just in the surroundings, but in their supposedly unchanging selves too. This shapes up to another struggle with the fate of the universe at stake. While the present volume is independently intelligible (just about), it isn't complete in itself, and newcomers will do better to read Echoes first, or even return to the original saga.