I am not blaming the actress, but the character of Kowalska killed this show's she was an unbelievably dumb cop. She was too reckless to be promoted above anyone or have her option valued after series 1. At times when it was obvious that she should've known to be patient and play along, she was feral and telling the villains they were suspected with her face. Again, not the actress, the writing and direction....they left several seasons on the table.