My Sister's Grave by Robert Dugoni

Tracy Crosswhite has spent twenty years questioning the facts surrounding her sister Sarah’s disappearance and the murder trial that followed. She doesn’t believe that Edmund House—a convicted rapist and the man condemned for Sarah’s murder—is the guilty party. Motivated by the opportunity to obtain real justice, Tracy became a homicide detective with the Seattle PD and dedicated her life to tracking down killers.

When Sarah’s remains are finally discovered near their hometown in the northern Cascade mountains of Washington State, Tracy is determined to get the answers she’s been seeking. As she searches for the real killer, she unearths dark, long-kept secrets that will forever change her relationship to her past—and open the door to deadly danger.

REVIEW:
This deftly plotted mystery centers on an enjoyable new police heroine searching for closure after the rape and murder of her sister decades before. After her sister's death, Tracy's world and family fell apart; she eventually went into police work herself after years as a high school science teacher. When her sister's body is finally found, Tracy pushes to reopen the case; though someone was convicted of the crime years ago, she has always had her doubts about the identity of the killer because of her questions about the way the investigation was handled. The mystery here is good as is the way the narrative jumps back and forth in time to show us glimpses of Tracy's past. Though the twist was not such a surprise, it was still well handled and believable. My one quibble is that once the police chief and other realized that an adult Tracy was going to push, they could have saved everyone a world of hurt by confiding in a fellow law enforcement professional. Still, an enjoyable read; I'll be on the lookout for future installments featuring this investigator.