The Big Empty by Robert Crais

Private detective Elvis Cole is hired by Traci Beller, a.k.a. The Baker Next Door, to look into the disappearance of her father Thomas, who went missing ten years ago. A fellow investigator, Jess Byers, thoroughly worked over the case five years ago and wasn't able to find Thomas.  As Elvis delves into the last day Thomas was seen alive, he and others connected to the case are followed, threatened, and harmed. Will Elvis be able to uncover the truth about what happened to Thomas and give Traci some sense of peace? The Big Empty will be published in January.