Chapter 7On Monday morning Sergeant Foster went to Roger's office and asked some questions.And then he went to Albert's house and asked some more questions.Inspector Walsh sat in his office and telephoned.He made phone calls about Peter Hobbs and he made phone calls about Tom Briggs.And then he had some coffee and sandwiches.At three o'clock the two detectives drove to the Clarksons' house.'I would like to see everyone,' he told Roger.Everyone came into the sitting room and sat down.Inspector Walsh stood in front of the windows and looked at them, one by one.'I want to talk to you. Someone killed Molly Clarkson.Someone put sleeping tablets in her hot milk and killed her.Nobody wanted to tell me the true story, but now I know the true story and I'm going to tell you.