Task: Question Answering
Input (English): Passage: While dancing at a New Year's party, the Saint spots an agent of Valerie Travers preparing to shoot someone, so Templar guns him down first at the stroke of midnight. Templar is placed by witnesses at the scene, so the San Francisco police request the assistance of Inspector Henry Fernack of the NYPD. Before Fernack can leave, the Saint arrives in New York and accompanies him to the West Coast.
Travers' father had been a police inspector whose efficiency caused trouble for a mysterious criminal mastermind named Waldeman. When a large sum of money was found in his safe deposit box, however, he was fired on suspicion of working for Waldeman and committed suicide. Travers is determined to clear his name by any means necessary. The Saint takes up her cause, despite her hostility for his interference in her plans and her suspicions about his motives. Templar gets the cooperation of the police commissioner, over the objections of Chief Inspector Webster and criminologist Cullis, who wonder if the Saint is Waldeman himself.
Templar and Travers cross paths again when the trail leads to Martin Eastman, a noted philanthropist and seemingly-irreproachable citizen, whom they both suspect is linked to Waldeman in some way. Templar forces Travers and her gang to drive away, all except her burglar, Zipper Dyson. Templar gets Dyson to open Eastman's safe and takes the money inside. The serial numbers confirm that it was stolen in a robbery perpetrated by Waldeman. When Eastman contacts Cullis instead of reporting the theft, Templar knows that Cullis is also working for Waldeman. With that information, not only does the Saint exonerate Travers' father, he also identifies Waldeman. 
Question: What is the full name of the person whose cause is taken up by the Saint?
Output (English): Valerie Travers.