Message Darts to the following persons:

[limokolax]

The Deputy Headmistress, Professors Sprout and Flitwick, Auror Tonks and Inspector Weasley:

I must ask that each of you join me in the infirmary at once. I've made an unsettling discovery regarding the source of our Headmaster's illness, unsettling indeed.

Horace E. F. Slughorn