The Secret Lives of Baba Segi’s Wives book by Lola Shoneyin

For polygamist Baba Segi, his collection of wives and gaggle of children are symbols of his prosperity and a validation of his manhood.

Everything runs smoothly until Bolanle, a university graduate and fourth wife enters the picture. Bolanle’s arrival threatens to do more than simply ruffle feathers. She unwittingly sets out to expose a secret that her co-wives intend to protect, at all costs.