During the first news report after the first murder of the movie, they misspell the name of the killer. Instead of saying Daedalus, on the Reuter at the bottom of the screen it reads Deadalus strikes again on the second time you see the newscaster reporting for HD6.
Towards the end of the film, when the true murderer has the heroine trapped in a garage with a running vehicle -- implicitly threatening her with death by carbon monoxide inhalation -- she could have easily stopped the SUV by taking off some garment (first to mind comes her sweatshirt), rolled it up, and stuffed it up the SUV's exhaust pipe, but she doesn't.
It is hard to tell whether this is an oversight on the script writer's part, or a mistake they intentionally ascribe to the character: On the one hand, missing this is perhaps plausible for a present-day young woman, who may presumably not be much "into" technology and cars; on the other hand, she is apparently supposed to be a rather bright and well-informed person, and the "kill the engine by stuffing something up the tailpipe" trick is such a hoary old staple of Hardy Boys and many, many other detective stories that a young ambitious district attorney ought perhaps be supposed to have read at least some of these stories when she was (even) young(er), so it's uncharacteristically stupid of her to overlook it.
It is hard to tell whether this is an oversight on the script writer's part, or a mistake they intentionally ascribe to the character: On the one hand, missing this is perhaps plausible for a present-day young woman, who may presumably not be much "into" technology and cars; on the other hand, she is apparently supposed to be a rather bright and well-informed person, and the "kill the engine by stuffing something up the tailpipe" trick is such a hoary old staple of Hardy Boys and many, many other detective stories that a young ambitious district attorney ought perhaps be supposed to have read at least some of these stories when she was (even) young(er), so it's uncharacteristically stupid of her to overlook it.