Death on the Nile

I have read very few Agatha Christie novels. I dont't know if all of them have the same pattern..
In part one, she arranged different characters like long thin threads next to each other, clean and distinct, in the next part she mangled all of them together, that I could barely follow the connections...throw in a few red herrings here and there, towards the end I felt this was going to be an obscure unsatisfactory ending, that sprouted mid story - but no! everything was carefully crafted beginning to end and kind of veiled in plain sight. Awesome read.