Don't you miss Scrubs? Want it back? well good news I am doing season 10 of Scrubs :)
One night while walking to Snape's office for detention Harry walks in on Snape on the floor in pain. Finding out that it's the dark mark Harry decides to take action and help him out. While doing that he learns about Snape more then ever.
Sirius tries to reason with Snape about Harry.