Tessa Gratton's latest epic adult fantasy, Lady Hotspur, is a sweeping, heart-stopping Shakespearean novel of betrayal and battlefields and destiny.

This is the motto of the Lady Knights - sworn to fealty under a struggling kingdom, promised to defend the prospective heir, Banna Mora.

But when a fearsome rebellion overthrows the throne, Mora is faced with an agonising choice: give up everything she's been raised to love, and allow a king killer to be rewarded - or retake the throne, and take up arms against the newest heir, Hal Bolingbrooke, Mora's own childhood best friend and sworn head of the Lady Knights.

Hal loathes being a Prince; she's much more comfortable instated on the Throne of Misrule, a raucous underground nether-court where passion rules all. She yearns to live up to the wishes of everyone she loves best - but that means sacrificing her own heart, and so she will disappoint everyone until the moment she can rise to prove those expectations wrong.

And between these two fierce Princes is the woman who will decide all their fates - Lady Isarna Hotspur, the fiery and bold knight whose support will turn the tides of the coming war.