The series shows the adventures of a Roman Catholic priest who, after returning to Poland from a mission to Belarus, is sent to work in a small parish in Sandomierz. As a pastor, together with a friendly policeman, he solves mysteries and gives help to his parishioners, as well as all those who are in need. Each episode is a separate story.
Main characters
Father Mateusz Żmigrodzki – a Catholic priest. After years of working in Belarus, he returns to Poland and takes a job as a priest in Sandomierz. He has a unique talent in solving crimes, which leads him to delve into many mysteries. He is extremely brilliant, intelligent and perceptive. In episodes in which he doesn't help to solve the case, he is often seen absolving the offender just before he or she gets arrested.
Deputy Inspector Orest Możejko - a police inspector. He is overbearing and always convinced he is right about his cases. He was initially skeptical about Father Mateusz's talents. He is a non-practicing Catholic atheist.
Aspirant Mieczysław Nocul - an Aspirant in the police and one of Orest Możejki's staff. At the beginning of the show he was a junior policeman, but has been gradually been promoted. He is a friend of Father Mateusz and co-operates with him, and in some episodes he has actually solved the cases himself separately to Father Mateusz, meeting him as he tried to make the offender acknowledge their guilt and repent.
Natalia Borowik - housekeeper at Father Mateusz's rectory. Grumpy, funny, loyal and devoted to the priest. Her musings often bring Father Mateusz inspiration for solving criminal problems.
The Bishop - the bishop of the Diocese. He has known Father Mateusz for years and after the Father's return to Poland entrusts him with his new role in Sandomierz. Despite reports on the unconventional behaviour of Father Mateusz, often fuelled by the secretary - Father Jacek - he has full confidence in Father Mateusz and turns a blind eye to his detective work, although Mateusz does not overstep his boundaries and takes his job as a Catholic priest above everything else.
Lucyna Wielicka and Michał Wielicki – the inhabitants of the rectory. After their eviction from their home, and much to the dismay of Natalia, Father Mateusz decided to take the family under his roof, and they are treated like his relatives.
Waldemar Grzelak "Bug" - a former prisoner. He currently lives in the rectory with Father Mateusz, he met him in prison when he was wrongfully accused of committing an offence, then he became one of Mateusz's friends.
Justyna Malec - the former Mayor of Sandomierz and now Editor-in-chief of the local newspaper, former love interest of Inspector Orest Możejko.
Daria - Dominik's mother. She is a journalist and travels a lot, and is the wife of Orest Możejko.
