Holidays with a Vampire

A retired major, Fyodor Lagutin, approached the detective agency of Miroslava Volgina. When he was walking his dog, he noticed a boy in black with a ladder near the neighbor's yard. The dog scared off the uninvited guest, and he ran away. The next day, Fyodor wanted to tell the neighbor about the strange unknown boy, but found that the neighbor had been killed…