Butcher's Heart

Butcher's Heart is a quest item in Pathologic. It may be obtained in the Haruspex's route for the side quest "The Mysterious Blood."

While searching for an infected heart to give to the Bachelor, the Haruspex may find a Worm herb gathering hut in the Steppe where an Herb Bride and several Butchers are also standing nearby. The Butchers will demand the Haruspex to kill the Herb Bride. The Haruspex can refuse to comply and choose instead to kill the Butchers. He can obtain up to three Butcher's Hearts from their corpses.

Quote
"The butcher was probably infected. They were hiding from Olgimsky's wrath in infected houses, correctly assuming thhat the guards wouldn't try too hard to look for them there."