El buen padre (Indira Ramos 1)second-hand

Answering an emergency call, police enter a house on an estate in Madrid and find a man covered in blood beside his wife's body, with a knife bearing his fingerprints. A year later an old man walks into a police station and says he is holding his son's lawyer, the judge who sentenced him and a student who testified against him; sure they were bribed, he threatens to kill one a week unless the real culprit is found. Inspector Indira Ramos, rigidly principled and obsessively afraid of germs, has three weeks.