The Wolveman

What’s happening in this The Wolfman movie clip?
By nightfall, Dr. Hoenneger (Antony Sher) conducts a lecture with Lawrence (Benicio Del Toro from Sicario and Snatch) as a case study on lycanthropy as a mind illness. Lawrence transforms into the Wolfman while men listening to the lecture are watching, beginning to be scared. Once the transformation is finished, men are panicked and try to flee, but doors are closed. Wolfman devores a man, kills Dr. Hoenneger and escapes while all the men present managed to run out of the building.