Everything is red. Khmelevskaya I.

In the house of Alytius Hansen, the friends of the indefatigable Mrs. John, who has long been living in Denmark, a large company unexpectedly gathered. Close friends and good acquaintances of the mistresses gathered from all over Europe and hit the party by accident. Because of the new garden lamp. The festival turned out to be noisy and cheerful, but when it was time to disperse, one of the guests was. dead. He was killed by a dagger with a blow in the back. But who did this, because the house was exclusively in their own?

Allow this riddle only Pani John...