- The execs apparently gave a pretty weak BS response to people questioning the title of the second, and as for the third, it had Willis going after new characters, who were unrelated to the events of the first two.
- Well technically at the end of the first film Julie and Ray "killed" Willis again and covered up the reason he was stalking them. So he could very well be mad about that particular summer rather than the original summer, so it's still "last summer". As for the third film, as someone already stated he's stalking and killing a new group of people for what they did their own previous summer ago.
What Happened to the Mouse? So what happened to Julie at the end of the second film? Going by the third film, I'm guessing it was Zombie!Ben who attacked her, but did Julie survive? And Ray, for that matter?
- We have no real way of knowing their fate unless another sequel or Word of God addresses it.
- Word of God says that Max was killed off to show that the killer was a real threat to the protagonists. It was added in re-shoots. If you notice, no one in the film actually dies until Barry at the pageant without it. Max's death adds that suspense. In-universe, it's sort of implied that the killer followed the kids to the pier and took pictures of them there. Being a fisherman himself, it's likely he witnessed the argument between Barry and Max and guessed Max was there on the night too. He might have thought he was in on the plan too and killed him like he was planning to do to the others. Alternately he knew Max was Julie's friend and so killed him to torture her.
- If you take a stanley knife and open a bin bag along it's long edge you end up with a good 12' by 8' tarp if you cut carefully, easily enough to make a rudimentary car boot liner. Now, this troper knows all too well that, despite scientists trying for decades to make a material one atom thick, Tesco have already beaten them to it with their bin bags but, but but but.... The dude prolly just went to Homebase first and got gardening strength bin bags.
- It's a long shot but let's say that Ben was lying in wait near Julie's house for her to leave. Not unreasonable - she's bound to get news about what he did to Helen. So after she leaves, he quickly moves the stuff into his own car. If he did lay Max's body and the crabs onto some boot liner, it might actually be easier than you think. Let's say for the sake of argument that Julie had to run a bit further to Helen's house - as she doesn't stop outside it. So she has to run all the way to the house, explain to Barry and Helen what she's seen and then lead them back to the car. You can see why he did this rather than just leaving the body in Julie's car - so no one will believe her. It banks on no one driving by and seeing what he's doing, but it's just about doable.
- The movie makes it look like Julie was very close to Helen's house when she started running, maybe a minute or two away on foot, and that it took merely perhaps five to ten minutes overall for them to arrive back to the car. However, this might only be poor editing. It's not shown how far Julie stopped her car from the house. It could have been like 10-15 minutes away on foot, which could have given the killer something like a half hour time to clear the trunk. (If the movie wanted to make this clearer, it could have shown extra scenes of Julie running and walking along several streets before arriving at the house. And perhaps have them all go back to the car in another car, to hammer in the fact that the distance was significant.)