There has been, at times, speculation by historians and her brother Hugh as to whether her death was truly a suicide, as there were some suspicious circumstances. The conspiracy theory that she was murdered by intelligence agents working for the Manhattan Project was bolstered by the 1975 Church Committee, which revealed details of assassinations carried out by American intelligence agencies, and was depicted in the fictional TV series "Manhattan". One doctor observed that: "If you were clever and wanted to kill someone, this is the way to do it."