London, 1889 god. Zhiteli goroda napugany i boyatsya pokidat svoi doma: kazhduyu noch na ohotu vyhodit Dzhek-potroshitel, zhestokiy manyak, raz za razom uskolzayuschiy ot ruk pravosudiya.
Serbskiy korol v kachestve zhesta dobroy voli posylaet na pomosch londonskoy politsii pisatelya Milovana Glishicha, cheloveka neobychaynogo uma. Blagodarya isklyuchitelnym sposobnostyam Milovana mnogo let nazad udalos poymat manyaka Savu Savanovicha, maskirovavshego svoi zlodeyaniya pod vampirskie napadeniya.
No pod blagorodnymi namereniyami skryvaetsya inaya tsel: serbskiy korol poslal pisatelya v London s sekretnoy missiey, ot vypolneniya kotoroy zavisit zhizn ego edinstvennoy docheri...