Murder at the National Cathedral (Capital Crimes Series #10)

"One of her most enjoyable books."
ASSOCIATED PRESS
The brutal murder of a friend drags Mac Smith and Annabel Reed from their newlywed bliss into an unholy web of intrigue and danger. When a second murder is commited in England, which the honeymooners had just visited, the Smiths go back across the seas, and straight into the center of an ungodly plot of secret agents, a playboy priest, a frustrated lover, a choleric cleric...and a murder so perfect it's a sin.