Apparently, one of the groups had still not accomplished their task. After undoing the effects of the Petrificus Totalus curse on William Macgonagall, Ambrosius turned towards the two students and said: "Good work, miss Frey. Now mister Macgonagall if you would please attempt to cast the spell yourself. Just do not linger as we do not have much time left". As the others had finished practicing, their gazes were all directed towards the boy.

Bill woke up from immobilization and readied himself to immobilize Kim. He focused on the charm focused energy on the fact that he has to succeed and said "Petrificus Totalus". Kim fell to the cushions but she tried to move to get rid of immobilization. Bill knew this was not a good feeling and he started to raise Kim her feet. After getting sure that she is allright he stood again and said one more time "Petrificus Totalus" and he felt some warmth in his fingers. As he look up he saw as Kim's hand stick to her body as she was glued and she fell into the cushions, good that they were there.

Bill came to Kim and looked towards her, her eyes were moving and he waited for professor Ambrosius to unfreeze Kim.