Heiress Rachel Argyll is murdered at her family estate. Eighteen months later, as her widower prepares to marry again, the identity of the murderer is thrown in doubt.

Calgary is determined to prove that Jack died an innocent man, but his alibi puts him in perilous danger.

At last Calgary is believed, but Rachel's killer is backed into a corner and is ready to lash out to protect their identity.

The devastating events that led up to Rachel's murder are revealed, and the true identity of the killer is finally unmasked.