Dreamcatcher

I don't know, I think Lee Seung Gi is great (loved him in mouse), but I don't think he'd suit this role. I just can't imagine him in it. This is the first drama I've seen Lee Jin Wook play, and I honestly really like him as the ML. The ML is a bit threatening, but I think that's an essential part of his character (he's supposed to be a monster & out for vengeance) and I think LSG wouldn't be able to pull it off as well as LJW is doing now. I'm sure we'll get to see other sides to him in the coming episodes.

it was sort of implied that the face we saw was the bulgasal, but I guess we'll be 100% sure in the coming episodes whether or not that's true!

possible counters to your points:
1. Ex cop for a reason + he probably doesn't trust anyone associated with bulgasal even remotely (since the kid said they're kind of friends/living together)
2. good point. but then, he likely doesn't want to appear as a killer in his father's re-incarnations eyes (and maybe expected the monster to continue acting as if they were human? but admittedly, that's not very convincing)
3. well... he obviously is plenty capable of staying standing & talking with a sword in him so why shouldn't he tell her? and without the sword, she would probably be dead (or at least, she'd think so)
4. the bag might have made sound? in any case it is heavy weight you don't want if you need to run for your life. + if there was a key, she'd been gone so it was a smart move to go for the car + at least the car made somewhat of a barrier between them, if she'd gotten out he'd have killed her even faster (and, a panicked mind is not always logical in such situations so even if getting out was safer she likely never thought of it)
5. wait did I miss something? who did the kid kill? min sang un's family??? wasn't it shown that it was the other bulgasal that did that? and agree that he is probably a reincarnation of some kind judging by his eyes and the track record of this show
6. well... he has always been beaten to the punch, and now that he is first things have kinda gone haywire (if your dead wife is your enemy's sister, i'd hesitate too). but yes, if he'd been determined she'd be dead and we would have a very short tv show =D

just some thoughts ;)

I liked the first episode - it is clear that there's a bit of set-up going on for the rest of the story and some parts (of Jung Hae In's background) might be a bit rushed, but that's not that unexpected and will likely be explained further. Jisoo was surprisingly expressive, I really think she did well for her first lead acting role. And while there is room for improvement (as someone else said, subtlety-wise), she has plenty of time to grow throughout the drama and it's not like she started off bad. She definitely has a future in acting.

How does the blood on the wall prove his innocence (cause I'm sincerely confused)? but I agree that the two knives should've been a big hint, but the detective is just too convinced of his own expertise that he's blind to anything that might point in another direction.

I think it really happened and he just said it in an ironic sort of way. Like, 'this history of mine that was really terrible and which I hate is ironically something that other people love'. At least that's what makes the most sense to me.