Who killed Mr. Robert?

The next morning, the entire household woke up and didn't notice any sign of Mr. Robert. Of course, they were well aware that Mr. Robert always comes to the dining table without waiting for his maids to invite him. Probably, he was a foodie that doesn't joke with his breakfast.

"Where is my father?" Kate asked her cousin's brothers, her father's nephew who had been living in the house, pretending as if they had no clue what was happening in the house.

They were sitting round the dining table, ready to eat breakfast. Unfortunately, Kate who was already aware of what she had done quickly showed concern, as though it was genuine.

"Um… well, he should be asleep if I'm not mistaken," Oliver responded, not sure of his answer.

"He is asleep at this hour of the day? That's impossible. Uncle Robert doesn't reach this time on the bed. Is he sick ?" Ollie retorted with a worried face.