Question: did tom start the fire at rick's

Answer: No, The next morning, after the ball, Lynette asks Tom where he had been when the fire took place at Rick's restaurant. Tom denies that he did it and he says he was listening to the car radio about the Cavaliers' basketball game and assures her that he did not start the fire. Rick comes by to the pizzeria and confronts Tom about the fire and that he found a matchbook from Scavo's pizzeria at the back of his restaurant. Tom again denies that he committed the arson and the men start to fight. Lynette tries to break the fight but fails and Andrew has to call the police. The incident leads to the police for an investigation about the fire. While waiting for Tom being questioned by the police, Rick expresses to Lynette that he missed her so much, and that makes Lynette uncomfortable so she barges into the investigation room. Lynette lies to the police that she saw Tom leave the ball momentarily, providing him with an alibi. After the police's investigation, Lynette and Tom argue when she still does not believe Tom. Tom reveals that he did not trust her with Rick, even though Lynette assured him that nothing happened between them. Later that night, Lynette finds out that Porter and Preston are the ones who set Rick's restaurant on fire, as the twins worried that Rick may try to take Lynette away from her family.