The first few points are more like nitpicks; they're relatively small things that kept me from reading smoothly. I'll give my overview at the end.
At the start of the first chapter, the first sentence is in the wrong tense. The taxi "pulls" up to the airport, when most of the text is in past tense. The tense use continues to be inconsistent with the rest of the chapter. Also, you use passive voice through out the literature. There are some places where you can't avoid it, but you can do without a few "had's." Like in the sentence: "Nobody was. . .; therefore everyone had become cynical. This could be replaced with 'everyone became cynical.' Still past tense, but more concise.
I also think you might be using a few words incorrectly. So Matthew has a dream that puts him on edge about the trip, right. One sentence: "Disregarding the effect the dream's invoke had on him, . . ." This is the one I'm more iffy on because it's not like you're using an absolutely wrong word, but more like a word that doesn't fit that well. Invoke means to call upon, summon, petition. I think the reason it doesn't fit well for me is that 'invoke' is a verb, and possessive verbs can be awkward. I think 'message' or 'imagery' would fit better. The other sentence: "He was irrespective and attested to the unease that was ushered. . ." I was under the impression that Matthew was bothered by the dream, but the word 'irrespective' means 'without regard', like he didn't care. Maybe you meant 'introspective' which means thoughtful and reflecting inwards.
In some parts, there are no quotation marks,". . .", in places where they should be like when Matthew is think to himself or muttering to himself. Or when Kevin is thinking to himself. When you don't have quotation marks, a reader will assume dialogue is a part of the narrative which is confusing.
All in all, there wasn't much there to hook me. The premise is interesting enough but the execution fell flat. The dialogue was weird and stilted at times with you only using contractions on occasion. The speaker tags also took me out of the story. The thing is about speaker tags is that, you don't always need to use them and they don't always have to be descriptive. What I mean buy that is, you can use 'said' more often than you think. Readers usually won't be bothered seeing that speaker tag specifically over and over again. I can't really tell who the main character is; I guess it's Matthew, but when I started reading, I thought it was Kevin. You can't really change the point of view now, but I think this story would've been more isolating, interesting, and mysterious if the point of view was third or first person limited from Matthew's perspective. Like if we only got to see Matthew's thoughts and no one one else's and things were interpreted through his eyes. Maybe it's because I've only read the first chapter, but I don't really like either brother but if I had to pick one, I'd pick Matthew. He's kind of a jerk and obnoxiously sarcastic but he's more sympathetic than Kevin. Kevin is a different type of obnoxious, goofy, and a little annoying. He comes off like a divorced dad trying to reconnect with his teenage son by going on a vacation. It's not really a good look.
I'm sure it gets better as time goes on, but watch out for the things I commented on previously: tense, passive voice, diction, and quotation marks. Hope this helps.
