The sequel titles.If the first one (1997) was I Know What You Did Last Summer, then the second (1998) should've been I Still Know What You Did Two Summers Ago, and the third something like I'll Always Know What You Did Three...Um, '96 Was It? Yeah, Three Summers Ago.
- 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.
- We have no real way of knowing their fate unless another sequel or Word of God addresses it.
The tanning bed.So, Julie's trapped in a tanning bed in the second film. Very quickly, four people come to the rescue. They eventually use a blunt object(?!) to break the ziptie holding the halves of the tanning bed in place after some struggling and a lot of writhing around from Jennifer Love-Hewitt. Nobody bothered to reach over to the wall and unplug the bed?
- Panic-induced stupidity?
Hot Tub Time Machine?So Will Benson is in the hot tub while Julie finds the porters body. She runs out and gets their attention to show the group the body, when they go in to check the corpse is gone and the blood is cleaned. BUT Will is the killer, so how did he pull that off?
Max's death.Why was Max killed in the first movie? I can see why Elsa and the police officer were killed as they were between the killer and a victim but Max wasn't. He had nothing to do with the accident and leaving the Fisherman for dead either, so there was no apparent reason for killing him.
- 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.
Will was on the boat!This theory sort of explains two things for me. 1) How Ben survives his one-handed water excursion and 2) his son Will's intense crazy in the sequel. Will was on the boat during the climax of the first film. He followed his father's instructions to stay hidden, only to abandon ship when his father went under. So he witnessed everything that happened between Julie, Ray and his dad- and then he rescued his dad from certain death. Once safely away from the murder scene, they plot their revenge/the sequel.
The trunk of Julie's carSo Julie opens her trunk to find Max's dead body covered in ice and live crabs, runs to tell Barry and Helen about it, and, five minutes later when she opens the trunk again, Max's body (and the ice and the crabs) are gone the trunk appears to be bone-dry. Which means: either Max was never in the trunk and Julie had a psychic vision of his death, or the killer was carrying around a spare trunk interior that, in addition to removing Max's body and cleaning up every last cube of ice, he installed (I'm assuming after removing the soiled original) in the extremely brief period in which Julie is talking to Barry and Helen. Which option is more likely?
- 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.