Honestly I came into watching this series because I thought it would be a thriller BL series--an interesting combo that stands out from the usual BLs out there. While I would definitely call it a thriller, it didn't have the typical BL elements. Like I get that there was a thing going on between Nai and Dan. Nonetheless, I will say that I don't refute it as a plot choice.

All in all, like other people have said, this show does an amazing job at offering a very complex storyline. I will say it is pretty heavy so I honestly had to take some breaks watching these episodes as it ended up being stressful to watch especially towards the end. This drama featured domestic violence, suicide, government repression against activism, murder, grief, homphobia, bullying, etc.

But with that being said, I found that the storyline was still captivating and each episode left me wanting to immediately watch the next to find out what the characters discover.

On the negative side, I will say the way they executed some of the scenarios were a bit awkward.

For example, the way things went down with Anan and Yada felt a bit rushed and anti-climatic. I thought for the buildup leading up to their (off-scene) arrest was a lot and very comprehensive. But it ultimately ended with them just being mentioned that they will probably spend time in prison and that's it. I felt like they could have at least showed them having this huge arrest and being taken away.

Additionally, when Dan wakes up after being dead, I thought the reaction from his friends were mild. It was very "welcome back" but I thought it would be more natural for them to carry more astonishment and disbelief that their friend died for however long but literally came back fine and dandy. I mean, throughout the series, they end up witnessing hella supernatural shit so I guess they'd be unphased...

And while I found the big reveal about Brother Anurak pretty shocking, it was a bit confusing how that wound up and I found his characterization changing from this stoic person to I guess frazzled and very concerned about Dan a bit weirdly played out. Granted, I guess it makes sense considering his true identity being revealed and that (for some reason) causing a lot of anguish for him.

Regarding the ending (I almost missed it but thankfully kept GagaOOLala running lol), I was disappointed about the reveal of Trin actually being in Dan's body. It is a still a horror genre......so I am not refuting it, but it just sucks for Dan haha. My only gripe with it is that it characterized Trin in an evil, malicious way, whereas his whole storyline was him constantly fighting for justice and truth.

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TL;DR:
All in all, I would recommend the series for someone that enjoys a mystery thriller, not necessarily to the typical BL watcher. While the plot could get very complex (arguably borderline too much) and some scenarios being awkwardly played out, I think Shadow significantly offered a vastly different vibe from the Thai drama series out there.