In Colin MacDonald's romantic thriller, two murder witnesses are put under police protection pending the High Court trial. But something goes badly wrong and they have to flee for their lives, never knowing who it's safe to trust. Barker ...... Simon Tait Hannah ...... Vicki Liddelle DCI Mulhall ...... Gayanne Potter DS Whitton ...... James Bryce Andrew ...... Kenny Blythe Matthew ...... John Paul Hurley Kayleigh ...... Laura Smales.