Teresa Battaglia

Superintendent Teresa Battaglia returns for a chilling cold case. After 40 years on the Italian police force, the once-brilliant criminal profiler is flagging under the wear of the job when a decades-old murder investigation lands on her desk. DNA analysis has revealed that a painting from the final days of World War II contains matter from a human heart. Teresa is able to trace the evidence to Val Resia, one of Italy's most isolated, untouched regions.

Superintendent Teresa Battaglia, a trailblazing criminal detective on the Italian police force, is on sick leave, recovering from her recent brush with death in pursuit of a killer. But none of her colleagues, not even her partner, know that her Alzheimer’s is getting worse, and that Teresa is unsure she will ever return to work. Teresa’s plans for retirement are shelved, however, when she is urgently summoned to meet with menacing serial killer Giacomo Mainardi.