I am an avid fan of mystery genre and by that I want to imply that I have read and seen TONS of books & movies.
So I was not really expecting much when I started this as I feel I have seen it all but the initial episodes were actually interesting. I got engrossed in the murder mystery. It gave us many questions and despite knowing the answers to some, I was patiently waiting for the story to reveal the same. However in the end, there were no answers given to some of the questions or worse a lazy simple answer! Hence, now I don't really get the point of the story.
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*Spoiler here*
My take on the story:
1. The reasons for the killings were not stated and no having mommy issues don't count as an excuse. Having a crazy mother doesn't automatically imply why he killed those women who had no connection to him whatsoever.
2. They pretty much ruled out the suspects quickly and through process of elimination anyone can guess who was the murderer.
3. I was expecting a female accomplice as well like a psychological thriller type towards the end but that was not the case [maybe my mind ran too much].
4. They never explained what happened to the third murder/ the girl whose body wasn't found.
5. The time travel rules sucked. Initially so much drama on why they shouldn't be messing with the timeline later became very convenient to change the course of time.
6. ML could have simply gone to the time and location of the deaths and find out who the killer was. Simple!
*End Spoiler here*

I was not into the romance so it didn't matter to me whether the couples had chemistry. Acting was fine for some characters however the bad guy was terrible I feel. ML's mother victim acting was worse.

If you like me have seen a lot of mystery dramas, I suggest you to skip this one.
However if you can handle a simple explanation to the questions then go ahead, as I said it did have a lot of captivating scenes to keep you hooked.