Continuity mistake: When Mrs McCluskey is talking to her sister on the coach, she has a plate of food in her left hand and some papers in her right. When Roberta rips the papers out of her hands, the plate of food is gone and is replaced by a sandwich.
Continuity mistake: When Lynette gets up from the PTA meeting to go to the washroom, she has a purse on her shoulder. After her confrontation with Anne Schilling, Lynette storms out of the washroom but she is no longer carrying her purse.
Answer: He was investigating the lead not the case.