This entry into Frogwares' Sherlock Holmes series is the biggest change since The Awakened.
Frogwares' switch to the Unreal engine seems to have paid off, as this is by far their best looking SH game yet.
The voice acting has also greatly improved, and together with improved character animations, C&P delivers a cinematic, high production value experience.
The gameplay, on the other hand, is the simplest yet. C&P plays a bit more like an interactive movie such as Heavy Rain or The Walking Dead than a typical adventure game. But the experience is still rather enjoyable, and the change certainly makes C&P the most accessible title yet. The game also seems to borrow the "observation text" from the BBC Sherlock mini-series, which is a nice touch. I think there may be some inspiration taken from LA Noire as well.
Although there are few puzzles to speak of, the most interesting feature is the "conclusion system". Even if you uncover all the clues (which is very easy to do), the player is able to deduce multiple conclusions. Only one conclusion is "correct", but it isn't always obvious which that is. The game requires you to pay attention and in some cases think rather carefully in order to come to the right conclusion.
The game also appears to borrow from Telltale's TWD and Wolf Among Us in introducing episodic gameplay with a "moral choice" at the end of each case. There are 6 cases total, each lasting roughly 2-3 hours. In addition to deciding the conclusion of each case, you decide between two moral choices. This doesn't seem to have much impact aside from showing you a different ending sequence. Although saving is automatic, after finishing a particular case ending sequence, you can restart before you committed to the conclusion and moral choice. This conveniently allows you to see all possible endings, if you so desire, in one playthrough.
Although the episodic gameplay introduces more variety than previously seen, the individual cases are not quite as compelling as the storylines of previous titles. Some cases are perhaps a bit too obvious, although there's still plenty of cleverness in the writing.
As an ardent fan of Sherlock Holmes adaptations as well as the source material, I definitely recommend this title.
It's also fairly easy to unlock 100% achievements. This is possible to do in one playthrough, although doing so without a walkthrough would be difficult. Unfortunately, most walkthroughs tend to spoil the plots of the cases. It is possible to replay any case after completing the game, though.