'Legacy' and its two sequels, (working titles 'The Summoning' and 'Time Meld') make up a trilogy within the series,
The Chronicles of the White Tower.
They are set both in modern times, and the medieval world of The Chronicles. Both parts are fully intermixed and the plot jumps between the worlds of Lady Marie Anne and that of Marian Fairfax.
Legacy is the fourth book in the series, ‘The Chronicles of the White Tower’ (Janette's Tale, Bennett, Winter Moon). It differs from the first three novels as it is based in both modern times and the medieval age.