Insidious intent - Val McDermid (Tony Hill & Carol Jordan #10)

Goodreads 4.06

In the north of England, single women are beginning to disappear from weddings. A pattern soon becomes clear: Someone is crashing the festivities and luring the women away--only to leave the victims' bodies in their own burned-out cars in remote locations. 

Psychologist Tony Hill and former police detective Carol Jordan are called upon to investigate--but this may be the toughest case they've ever had to face. Meanwhile, Detective Sergeant Paula McIntyre and her partner Elinor must deal with a cruel cyber-blackmailer targeting their teenage ward, Torin.

Impeccably plotted and intensely gripping, Insidious Intent reaffirms Val McDermid's place as Britain's reigning Queen of Crime.