In the novel “Murder in the Vicarage House,” one of Agatha Christie’s favorite heroines appears for the first time—Miss Jane Marple. This meticulous and charming elderly lady living in the village of St. Mary Mead is capable of unraveling even the most baffling situations, only briefly distracted from her knitting. And when a murder of Colonel Protheroe occurs in the vicar’s house, only Miss Marple can figure out the killer among the many villagers who wanted harm to this unpleasant type.