Professor Alvaro Morte of Money Heist recently took to Instagram to tease fans with a new series of images starring Najwa Nimri's Inspector Sierra. The character, who was introduced in part 4 of Money Heist, is shown pointing a handgun towards Alvaro Morte's head in the image. The image in question, like the rest of the series, features a black and blue color scheme. Below is a picture of what I'm talking about.