A violent street attack is investigated by DS John Rebus and new detective Siobhan Clarke. However, it's John’s family that pose unexpected problems, along with an awkward affair.

John's words come back to haunt him, while his brother abducts drug dealer Darryl Christie and recruits ex-army comrades for a risky raid. John hears his paralysed former partner's confession.

John is frustrated at family gatherings, unaware that the Cafferty and Christie rivalry is viciously escalating, with Michael at its heart.

Michael has motivation to kill Cafferty, as has John, while Darryl Christie tries retaliation, using Siobhan to help his plan.

Lives are at stake, with John's loyalties torn and more revelations to come, while Rhona questions Chrissie, but home truths prove more dangerous.