1521a

Buck wants to fill the role of Martin, who is dead or dying and who asked Buck to be his successor because of a specific reason.
Buck wants to fill the role of Martin, who is dead or dying and who asked Buck to be his successor because Buck caused his death.
Buck wants to fill the role of Martin, who is dead or dying and who asked Buck to be his successor because Buck witnessed his death.
Buck wants to fill the role of Martin, who is dead or dying and who asked Buck to be his successor because Martin taught or trained Buck.
Buck wants to fill the role of Martin, who is dead or dying and who asked Buck to be his successor in order to prevent anyone from learning of Martin’s death.
[[1521a