The Prime Minister is the fifth in Trollope's series of six Palliser novels. With Phineas' difficulties resolved, Trollope introduces new characters. A respectable young girl forsakes the man her family had always intended her to marry when she falls in love with a man of foreign extraction and an unknown family. He has a gentleman's education and manners, but his family background and financial means are mysterious. Is he really a gentleman? Meanwhile, Plantagenet Palliser becomes Prime Minister of a shaky coalition government, and Glencora and Madame Goessler are busy with the ensuing social obligations. (Summary by Karen Merline)

The other Palliser can be found at -

1 - Can You Forgive Her?
2 - Phineas Finn, the Irish Member
3 - The Eustace Diamonds
4 - Phineus Redux
5 - The Prime Minister
6 - The Duke’s Children