Zombie Invasion

Find the key information in the professor's house to survive.

ARGGGGHH ! A zombie gives out it's final dying shriek as you step in the zombie killer professor's garden. you are safe for the time being. Turns out the shriek was a homing call and it has called all the ranks of the undead to the house. They are getting closer and closer. Can you hear them? Find the key information hidden in the professor's house to survive the invasion.