Pamplona, Spain: One year after a gruesome crime, Inspector Amaia Salazar is waiting for the trial of Jason Medina, accused of raping and murdering her stepdaughter. Just as the trial begins, Medina is found dead, and Amaia gives birth to her son. Reinstated to active service, Amaia is tasked with investigating two mysterious cases: a profaned church with a baby's amputated arm and a man who sent a note revealing his wife's corpse with the same cryptic message "Tarttalo". As Amaia delves deeper into the cases, she uncovers a dark connection to her own family's past, including a long-lost twin sister and a mother with a troubled history. With her family in danger, Amaia must solve the case before it's too late.

The Legacy of the Bones
In this next installment, Inspector Amaia Salazar returns to the ominous Baztán's valley to investigate a chilling new case, where the consequences of failure may shatter everything she holds precious.