Given the task definition and input, reply with output. In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Passage: In April 1967, the office of Marvin Kramer, a Jewish civil rights lawyer in Indianola, Mississippi, is bombed by the Ku Klux Klan, killing Kramer's five-year-old twin boys and leading to the amputation of Kramer's legs and his later suicide.  Klansman Sam Cayhall is tried for murder in the bombing, and is eventually convicted and sentenced to die in the gas chamber at the Mississippi State Penitentiary.  Twenty-nine years later, in 1996, Adam Hall, a young attorney at the Chicago law firm of Kravitz and Bane, seeks assignment to the firm's pro bono representation of Cayhall in the last weeks before his scheduled execution.  Adam is Sam Cayhall's grandson, his family having since moved away from the South and changed their name, haunted and shamed by Cayhall's crime.  Adam is motivated to take the case in a search for some understanding of the dark secrets of his family, which prompted the suicide of Adam's father the year Sam was sentenced to death (and whose body Adam found as a child).
What's the full name of the man found guilty of killing the Jewish lawyer's children?