All of a sudden, the robot said, "Dad, Mom is home."

Nathan instructed, "Turn off the news." The channel switched back to the cartoons from before.

When Hilda came back with different bags of things, she saw Nathan and the robot sitting together on the sofa watching cartoons. She put down what she was carrying and called, "Caleb!"

"Mom."

Nathan watched the robot rush off happily and even gladly helped Hilda bring the things inside. That is one clever robot.

Nathan had goosebumps all over. He remembered the time when Diana placed a toy to spy on them in their house. The robot in front of him now was way...