My favourite of the series this follows DI Mason Walker in his pursuit to find who’s killing haemophiles and humans alike but he’s hit a standstill . Then his boss brings in independent specialist Cai Bracken who is a haemophile and although Mason isn’t happy he knows they need his help . Fabulous book everything is tied up all questions answered and the epilogues for the main characters in the previous two books was icing on the cake .