From critically acclaimed, master thriller author Margaret Mizushima comes the eighth installment of the award-winning Timber Creek K-9 mysteries.

Deputy Mattie Cobb and her sister, Julia, travel to Mexico to visit their mother. But when they arrive, they discover that she and her husband have vanished without a trace. Back in Timber Creek, Mattie finds a chilling note on her front door telling her to look for “him” among the standing dead up in the high country.

The sheriff’s department springs into action and sends a team to the mountains, where Mattie’s K-9 partner, Robo, makes a grisly discovery --- a body tied to a dead pine tree. Mattie is shocked when she realizes she knows the dead man. And then another note arrives, warning that Mattie’s mother is in desperate straits. In a last-ditch gambit, Mattie must go deep undercover into a killer’s lair to save her mother --- or die trying.