[2] The eponymous heroine, Alyx, is (intentionally) described with different attributes across the different stories, although she remains reasonably constant inasmuch as she is depicted as a realistic human being, not the clichéd fantasy woman prevalent across much of the genre.
She helps a wealthy young woman named Edarra escape from an arranged marriage to an unpleasant and possibly murderous widower.
By coincidence, she's picked up by a time travel device being used by archaeologists in the distant future, the Trans-Temporal Authority.
As the only living thing ever recovered by time travel, and a relic of a hardier age, she is employed for her expertise in outdoor survival.
Alyx grows in influence in the Trans-Temporal Authority and apparently reshapes the agency, leading to a rift between its members.
Alyx makes cameo appearances in several of Leiber's Fafhrd and the Gray Mouser stories.
In "Under the Thumbs of the Gods", (1970) Fafhrd and the Gray Mouser encounter their former lovers during an otherworldly experience.