"Las Vegas Revisited" is the third and final installment of the "Retrorsum" book series. The machine that enables time travel is now more powerful than ever. With these advanced capabilities at their disposal, the geniuses behind this grand creation seek to launch new expeditions to distant pasts. While new "target years" have indeed been opened up, Retrorsum has exceeded its intended purpose, bringing about some unexpected surprises along the way. This final chapter delivers incredible adventures and unanticipated twists that seem to defy all logic.