Character mistake: The title card shown after Deborah's suicide states that Michael's escape from the asylum takes place "Fifteen Years Later." Yet the night after the escape, Sheriff Brackett refers to her suicide having been seventeen years ago. (00:38:40 - 01:29:00)
Continuity mistake: Michael goes to his last meeting with Loomis bare faced and wearing a robe. Then he's sitting there not wearing the robe and wearing a mask.
Continuity mistake: Michael runs at Laurie and they both land on the ground. All the way down, Michael is on top of Laurie. Next shot shows Laurie on top of Michael. (01:53:45)
Answer: Laurie's father, Mason Strode, is a realtor who owns Strode Real Estate, and there's a realty sign post in the front yard of the old Myers house. Mason tells Laurie, "They're coming by to look at it later," so we know he's talking about people interested in buying the old property. When Michael sniffs the envelope we see the Strode Real Estate logo, and it presumably contains realtor's paperwork which is pertinent to the sale of the house, and is meant for the people who will be coming by later.
Super Grover ★