Story developing

Well because this is going to be my last post im going to be very in detail and deep, so you as a not knower of the book can follow up.
The plot is given in the first 2 chapters (are short) principal characters
Husband Simon (co antagonist)
Jacqui (protagonist)
New Simon wife Linnet (secondary plot making)
Poirot (you/detective)
<secondary characters> (not really important)

The book goes like this:
The bad man simon marries linnet and jacqui comes to they honeymoon in a nile to trip to make them happen a bad time. Jacqui hates to death linnet.
Linnet dies, poirot knows jacqui didnt kill linnet and starts the murder search
Everybody in the ship had reasons to kill linnet, some pearls are stolen, more people gets murdered.
Poirot discobers tim inherits linnet money and discobers the mistery.
He married linnet to kill her and his old wife its a criminal tom then jacqui kill herself and Tim. End