Veil of night - Linda Howard

Jaclyn Wilde is a wedding planner who loves her job - until the bride whose wedding she is organising is brutally killed, with everyone involved pointing fingers at everyone else. Jaclyn, at least, isn't a suspect, but only because she has an alibi. The others, from the cake-maker to the florist to the wedding-gown seller, are practically dancing in the streets because Carrie Edwards, a bridezilla of mythic nastiness, has met her end.

Eric Wilder is the detective assigned to the case. There's too much evidence implicating too many people and compounding his problems is Jaclyn Wilde who keeps interfering with him, distracting him and somehow fouling up everything. To top things off, somehow she becomes the focus of the killer, and he finds himself with a completely different problem.