Sally and her assistants Jack Wyatt and Esther Roberts have to present a working Timepiece to the top brass in a week’s time. The only problem? It’s really hard to present time travel in the flesh. To ease the pressure, Anthony Partridge suggests a weekend trip to the newest desert vacation spot: Las Vegas, NV. But sending Sally off in public is a dangerous prospect. Will Sally’s foreknowledge of card-counting techniques and the looming Trinity nuclear test land her in hot water?