A Roman equivalent, I suppose, of Edith Hamilton's 'Mythology'.
None of these are as narrative as Hamilton, but that has a lot to do with the source material. Have a look especially at Bremmer and Horsefal.
Powell, B. B. (2004). Classical myth. Upper Saddle River, N.J: Pearson/Prentice Hall.
Wiseman, T. P. (2004). The myths of Rome. Exeter: University of Exeter Press.
Bremmer, J. N., & Horsfall, N. (1987). Roman myth and mythography. London: University of London, Institute of Classical Studies.
Fox, M. (1996). Roman Historical Myths. Oxford: Oxford University Press.
Gardner, J. F. (1993). Roman myths. London: Published for the Trustees of the British Museum by British Museum Press.