Necessary as Blood is the last of the Duncan Kinkaid/Jemma Jones mysteries published so far. We must wait (at least in the US) until February 7 for the next book in the series.

Here's what Publisher's Weekly says about Necessary as Blood:

"Romance dominates Crombie's 13th contemporary procedural featuring Scotland Yarders Gemma James and Duncan Kincaid, who are on the verge of getting married. The how, where and when of their wedding proves a considerable source of stress to both, overshadowing the murder investigation of Naz Malik, a solicitor suspected in the disappearance of his wife, Sandra Gilles, an artist specializing in textile collage. Malik was found suffocated in Bethnal Green, with traces of an animal tranquilizer in his system. Meanwhile, James's mother is seriously ill, placing James in the impossible position of trying to fulfill both her familial and work responsibilities. In addition, James must fight to keep Malik's now parentless young daughter from falling into the custody of Sandra's unsavory relatives. Hopefully, Crombie will provide a better balance of police work and her characters' personal lives next time."

2011 No 166