Continuity mistake: When Richie asks Laura and Rob "Is dinner ready?" the door behind him is closed. Laura tells Richie "Yes, it's ready." We get back to Richie as he yells and the door is cracked open. Then when we see the wide shot of Richie, Laura and Rob the door is closed again.
Continuity mistake: Laura's parents aren't the same parents she had in "What's In a Middle Name" - different names & completely different actors.
