Richelle Dunn and Roy Lewis were here, completely unaware of the uninvited guest who had come to her doorstep.
In Richelle's house, there was a very well-developed burglar-proof system that she had developed herself.
Plus, Timothy and Tiffany were kids with a strong sense of self-protection, so before Mrs. Walker came, Richelle could leave them at home without any worry, and there has never been any mishap.
Today, just like always, Mrs. Walker went to the supermarket during the children's nap time. Before leaving, she turned on the security system.
The doorbell rang just as Timothy and Tiffany woke up.
On the coffee table, there was a note from Mrs. Walker saying she had gone out for shopping.
"Brother, who is it?"
Timothy took out his iPad and checked the security system.
"Ah! Sis, come look, it's Grandpa Clarkson!"
