Harry returned late to Slytherin dormentries, first he had gone to the bathroom to try and wash the thin blood deep scars on his hand but they just wouldn't be washed away, like Umbridge's cold smile lurking in the back of Harry's mind, and then he started to go up to Griffindor and then remembered the horrible misfortune of the sorting hat.

The first thing he saw when he entered the strangely cold dungeons was Malfoy sitting with Blaise, Crabbe and Goyle on the expensive leather couch. They were the only Slytherins in the common room and they all looked up at Harry accusingly.
"Where on earth were you potter, Honestly I need my beauty sleep and I have to stay awake waiting for...well you!"
There was a silence where Malfoy crossed his arms and glared at Harry  or tried to glare, he honestly looked to tired to be angry. Harry was just going to reply a snide remark back but Malfoy continued.
"Nothing to say Potter?, I suppose a nit wit like you wouldn't.  Hey what's that on your hand? Is that what you spent all bloody evening doing? Drawing on your hand? Honestly Potter..." He glanced down at Harry's hand causing Harry to tug down on his sleeve in an effort to hide it. "Let me see" Malfoy commanded, stepping closer to Harry causing his emerald green  eyes to widen in surprise and his legs to step further away from Malfoy. "Potter.." He growled taking another step closer, making Harry take backwards steps away. "Let me see!" Malfoy demanded again launching forward on Harry who's back was now against the wall.
Malfoy reached out for Harry's hand and grasped him tightly around the wrist, then tugged his hand towards him to investigate why Potter was acting so strangely.

Harry struggled but Malfoy had the advantage and had a death grip on his wrist, he tried to force him to let go but he only had the power of words "let me go Malfoy"
"Who did this to you?" asked Malfoy while pressing on the thin word like marks on his hand causing Harry to jerk back in pain. But Harry wouldn't answer, after all what could anyone do and what would everyone say if he told.

Curious Blaise stepped forward and examined Harrys hand as well.
"I'm not in a zoo, bugger off" Blaise looked up after Harry said that with a confused expression. 
"What's a zoo?" Blaise asked to which Harry sighed and muttered "are you actually kidding me?" Under his breath. There was another silence until Malfoy spoke again, this time looking Potter directly in the eyes, wow his eyes really are grey. "Tell me who did this to you!" Malfoy demanded for what seemed like the hundredth time. "No"
"Potter I will hex your balls off " Malfoy threatened his grey eyes seeming ever closer and ever more dangerous but Harry could handle dangerous, he's fought Voldemort for goodness sake.
"That's not going to solve the problem is it,  I thought you were Supposed to be Clever. Malfoy." Harry retaliated.
Malfoy growled, tightened his grip  and then started stomping to the boys dorms tugging Potter along with him, who was still trying desperately to escape and not fall at the same time.
"Stupid Slytherins" Harry muttered.