Severus Snape is a fictional character in the Harry Potter series of novels by J. K. Rowling. In the first five novels, he is the professor of Potions at Hogwarts School of Witchcraft and Wizardry. From Wikipedia
The faithful seven-season adaptation will begin filming in England this summer featuring John Lithgow as Dumbledore alongside new leads Dominic McLaughlin, Arabella Stanton, Alastair Stout