I‘m not really in the mood for reading at the moment, so my opinion might also have to do with that.
In the first half all that “happy-couple”-/“mourning-widow”-stuff annoyed me. This was better in the second half – at first. But then the story began to only be woven from trapdoor to trapdoor. This was annoying and more and more confusing.
Was wrong with the villain but right in another detail.
Conclusion: No recommendation, too lenghthy.