 One of his early visits is to the Metropolitan Museum of Art, where he consults with Arms and Armor curator Christopher Langley (Gabel) about the type of weapon that could make such a unique wound.The elderly Langley is thrilled to have such a unique problem to solve, and he devotes a great deal of time to research.The angle of entry and the perfectly spherical nature of the wound eliminate most of the weapons familiar to Langley.