Tally's Secrets

In author P. J. Cole's second book about the Coleman family the mysterious death of Leigh Coleman's grandmother, Tally Harper Coleman, creates more questions than answers. Who would want to kill Tally and why? Leigh, Corey Davis, her former bodyguard, and Detective George Stokes, the man who solved Leigh's kidnapping in "Rectified" work together to untangle the myriad clues surrounding Tally's murder.
Tally's safe room in the cellar is another riddle to her murder, and, what was in the envelope titled "Code" that Leigh and Corey found there? Harper House, the safe place Tally had created for abused women, was also part of the mystery surrounding Tally's murder.
Will Leigh, Corey and George be able to decipher the clues and find out who orchestrated Tally's murder?