Negative for now. When the game is sufficiently updated, this will go positive.

As others have said, this should not have left early access yet. It's still far too buggy and unpolished.

Buggy: I am consistently being wedged into the wall due to NPCs pathing into me at the wrong time.
Textures often don't quite load right when you're on the other side of a "barrier" such as a vent or door. pop-in is a major issue.
I can't complete a certain side objective because the item itself disappeared when it left the room via a window.
I've had sections of a wall be missing a small part of its textures entirely, with a random bit of it jutting out halfway into the hall.

Unpolished: Even when you're dealing with a kidnapper, your only possible accusation is murder, and if you give the kidnapper the money, the money will exist on them until the moment they free their victim; if you arrest them right before they free the victim, you can get the money back, but immediately after, it goes poof.
Dialogue options in general feel extremely odd, since there's no attempting to build fake rapport with people to build their trust, there's just bribing if they don't answer right away. Due to the procedural nature of the game, some rare investigations give you almost no actionable info to go off of besides brute forcing it via profiling every person you see manually.
When NPCs answer their doors, they often are standing just 1-2 pixels away from you trespassing to be able to talk to them, so while you can chat, you have to be extremely precise.
Controls are a mixed bag, since almost everything is bound to left or right click. If you mix them up just once, you could accidentally ram open a door instead of casually opening it, alerting everyone nearby, and angering the crackheads that lash out at every little thing. Also, everyone is a vigilante against you, in that if you do any supposed crime of any sort, even if it's just arresting the actual criminal, they will bum rush you with whatever weapon they have on them, but they ignore everyone else.
Finally, if you yourself embrace the life of crime as a thief, there's only a small handful of items even worth the time to steal; everything else may as well just be for your personal collection due to how worthless they are. Hell, even the occasional weapon you find isn't worth much. Sure, we probably shouldn't be encouraged to steal everything, as players tend to do, but the balance just feels off.

Pros: The game has yet to crash on me, so that's something at least. I guess.

I want to like the game. I really do. It has a lot of features I enjoy in stealth immersive-sim-lites (too few ways to approach scenarios for me to consider it a proper immersive sim), but it just keeps tripping over itself, and all the, admittedly small, problems pile up.

TL;DR This game is unfinished, but worth waiting for.

I'm hesitant to leave a negative review, because although my feelings about this game are mixed, I still think that its core ideas are incredibly novel and that this developer deserves the time and criticism required to pick the game off the ground.
With that being said, Shadows of Doubt has a lot of problems at time of writing.
The game is tagged as an Immersive Sim, and the idea of being a detective in a dystopian city, with your only goal being to solve murders and live your life in the city, is super compelling. However, the real problem presents itself when you realise that, all of it, the ENTIRE save, is 100% procedurally generated. This means that every murder happens only really happens because they are programmed to happen, and so after your first few cases, the mystery of how the games systems interact with each other, or rather, how they fail to interact MEANINGFULLY with each other, leaves everything feeling kind of cold and isolated, sterile. Boring, honestly. Despite the game presenting a lot of very interesting ideas, with the kind of cult-y murders and the grafitti in the city hinting that there are a number of underground conspiracies or groups, there is very little to find beneath the surface of this game. Each murders have a 'motive', but these motives are never particularly interesting, and very formulaic. The game plugs a few different things into every murder, but in a way that is very formulaic and, you guessed it, 'procedural.' Sometimes the game just decides to make a random person murder another random person, because there's no orchestration or narrative behind the scenes besides "someone has to murder someone". It's a detective game, and like all detective stories, like REAL detectives, being able to narrativize and see the Reasons for a murder are like, the whole thing that makes them interesting. True Detective Season 1 isn't interesting just because of how involved and 'cult-y' the murders are, it's interesting because you're looking at it through the eyes of two detectives who have other things in their life going on alongside it. There's no heel to the gameplay of Shadows of Doubt because there's nothing interesting to do beyond the occasional side-jobs and the murders.
Beyond this, there are a number of systems that I as well as others would've expected to see in this game that are completely absent, while other systems are very developed but lacking depth.
You can buy and furnish an apartment, but it's not like you'll ever meet anybody to invite over, no one will break in when you forget to lock the door behind you... You also never encounter other private eyes doing the same thing you are in the city, despite the fact that there's clearly a market for it. That's not to mention you can break the law as blatantly and as many times as you want, and as long as no one physically beats you into submission you'll face zero repercussions. You're not remembered by any NPCs you meet, and NPCs won't react to other NPCs' deaths... Those are just the most immediate issues to me, anyway.
I understand the team behind this game is miniscule, and so expecting something absolutely stellar and polished is maybe asking a lot, but with 1.0+ release for almost 40 Canadian dollars, I'd expected a full game.

All this game really needs to be great is for every murder to have intentionally written and intriguing stories, all the side jobs should be shorter, easier, and more interesting, and then it can go as crazy with the procedural generation as it likes. What good is a murder mystery simulator when it's all murder and no mystery?
The systems for something great are all there; individual NPCs in the city have spouses, and friends, and a schedule, but none of those things are ever really consequential to the gameplay. They really should be.
The game also has its fair share of bugs, but those are honestly pretty inconsequential in comparison to the glaring issue with the core murder and NPC relationship systems.

All in all, if you're really into decorating a voxel-style apartment and some recreational B&E, this game is a safe bet, but otherwise I'd save your money until there's a bit more substance behind it all.

Had a strong start during Early Access, and above all else this IS an impressive and fun immersive sim. However I genuinely cannot stress enough how unchanged the game is from it's early state. Aside from a handful of new cases and possible locations, very little changed about the game through its development, and some of it's most glaring features were never address. The game was rushed out to a laughably strange 1.0 release while it was still rife with bugs and had done very little with it's initially very intriguing concept. Apparently fixing the spaghetti code is more trouble than it's worth, but the way things are now, I can't really recommend this game to someone because it's just half-baked.