If you are willing to adjust your expectations of this limited series, you may not be let down by this generally well-acted drama.
In reality, there really is no "mystery" other than not knowing *anything* substantial about the central event for 7 of the 8 episodes. Plenty of suspicions and dubious conclusions by law enforcement are lobbed (sorry) between characters relentlessly episode after episode, with key "evidence" uncovered along the way being almost hilariously circumstantial (and obviously meant to mislead).
The *vast* majority of the episodes center around the family dynamics of the. Delaneys, with plenty of flashbacks that fill in present day interactions to explain why some family members react and behave the way they do.
In the end, the final episode was a complete letdown, with the last 5 seconds of the penultimate episode being the biggest twist/shocker of the series. I did not read the book, but it felt like the last episode was stretching the last couple pages of the book into a full hour of content.
If you temper your expectations oso that you don't expect a big payoff to the series, and instead watch it as a family melodrama wrapped around a "meh" mystery, your opinion might be higher.
