I want to recommend this. I really do. At best, it's /fine/, but more realistically it's /ok at best/.
So you want a detective adventure game. You're not caring about actual character development, or likeable characters, or anything: then sure, you are going to get none of that with this. It's not something you'd expect, and you're not going to find yourself crying at the end (see: The Blackwell Quintet).
So you want the ability to need to think about your deductions: this seems to hit that point! each of the 6 (4 decently fleshed out + 2 really quick) cases has multiple conclusions which you reach by deciding certain points do or do not hold. This is pretty great - the deduction and mystery in this sort of game quickly fall down when a game is so linear it tells you that your suspicion of some character is clearly unfounded not through analysis, but simply by the game deciding that character is not investigable...but then it falls down: okay, I can suspect this character, but how does anything else I deduced make sense?
There is a "correct" option for each case, but at every single one of them I either a) had a rock solid case that someone else could've done it (and I can accuse them, and get an "incorrect" result) or b) it's vague /at best/. Perhaps I only had a single piece of evidence this other person was /even involved/ with the case. Perhaps I had 5 pieces pointing to another character. I sometimes could accuse this other character, but I would be technically wrong. If you've finished the game - the train case, the kew gardens case, even the lord case.
God I want a decent detective adventure game, and this is firmly OK at best...it feels like it avoids the linear, singular solution with one singular solution (something e.g. LA Noire, despite all its faults, did manage)...until you finish the case with the "correct" option and then the game goes "wahoo you guessed correct despite every other option being equally likely and there being no explanations of every other thread in the case". That's a hard barrier to cross, and most of the other games solve it by making the characters likeable or the puzzles fun (I rtealise I've not spoken of the puzzles -- they are not at all fun. At best they are okay, at worst tedious to rage inducing).
