The stars predict a wedding-day disaster, but San Francisco astrologer Julia Bonatti never expected murder.

Julia Bonatti is alarmed by the astrological signs looming over Geneva Leary's wedding day, but nobody asked Julia's opinion and being a bridesmaid means supporting the bride no matter what. Even with the foreboding Moon-Mars-Pluto lineup in the heavens, no one's prepared for the catastrophes that strike: a no-show sister, a passed-out wedding planner, and a lethal shooting in the dead of night.

With anger and grief threatening to tear the Leary family apart, Julia is determined to understand how such a terrible tragedy could have occurred. As she digs deeper into the family's secrets, her astrological insights lead her to some rather unexpected conclusions.