Kith and Kill - Geraldine Evans

When Sophia Egerton, matriarch of a family of fashion designers, is murdered on her ninetieth birthday, British Detective Joe Rafferty wonders if one of her family thought she'd lived too long. Because most of the suspects just happen to be the wealthy Sophia's ever-loving relatives.
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Rafferty's murder investigation is thwarted by his own parish priest, Father Roberto Kelly. The priest, so frequently Rafferty's bête-noire, has turned up to offer succour to one of his lady parishioners. And Rafferty realises that it is only by getting the wilful priest on-side that he will ever get to solve this murder mystery and get a conviction.
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But can he ever persuade the wilfully self-righteous priest that helping to solve a murder is more worthy of a nod from God, than protecting the secrets of the confessional?
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RAFFERTY & LLEWELLYN MYSTERY SERIES
Dead Before Morning #1
Down Among the Dead Men #2
Death Line #3
The Hanging Tree #4
Absolute Poison #5
Dying For You #6
Bad Blood #7
Love Lies Bleeding #8
Blood on the Bones #9
A Thrust to the Vitals #10
Death Dues #11
All the Lonely People #12
Death Dance #13
Deadly Reunion #14
Kith and Kill #15
Asking For It # 16
The Spanish Connection #17
Game of Bones #18