What to read after Death on the Nile?

Aboard a Nile steamer, Hercule Poirot meets Linnet Doyle, a woman who appears to have everything: youth, beauty, wealth, and a loving husband. But the husband was stolen from her friend Jacqueline de Bellefort, who has been haunting the newlyweds path, showing up to wreak havoc in their plans. They have secretly booked passage on the steamer to escape, but still, tragedy strikes: Linnet is shot through the head. As the complications multiply, Poirot and his little grey cells are faced with nothing but airtight alibis.