It is 406 B.C. The Gaels tramp battle through the vast forests of Northern Albu and cross the brooding moors and marshes to reach the grain fields of Southern Albu. The majestic stone brochs, crannags and dùin of the north give way to the great hillforts of the South. The Sisters is the third book of the Conall series. In this tale, the fearsome women surrounding Conall take centre stage.

A malevolent queen bent on conquering Northern Albu launches an invasion and kidnaps the twin daughters of Conall and Mórrígan. The king's and queen's blood oath promises no mercy until the young twins are returned.
Which partners are loyal to their hand-fasting oaths, and who will betray them? Will honour be redeemed on the battlefield?
A merciless assassin stalks the community, and Tadhg is given the unenviable task of tracking the killer down. His mission worsens when the signs point to one of the women close to Conall, and he becomes a target.
Amid the battles, betrayals and intrigue, Mòrag, a tall beauty and fearsome warrior, desires Conall at any cost. A clash with Conall's queen, also known as The Dark Huntress, is inevitable.
The Conall Series contains scenes of sex and violence and language appropriate to the period (400 B.C.) it is set in. It is not recommended for those under 14 without parental consent.