Final answer:
The question relates to the trial of Sam Sheppard, and the missing word is likely 'courtroom,' as the prosecutor, Gerber, wanted to try Sheppard in the Cuyahoga County Court of Common Pleas for his wife's murder.
Step-by-step explanation:
The question seems to pertain to a legal case, likely referring to the trial of Sam Sheppard, who was a suspect in a high-profile murder case in the 1950s. If we are discussing the trial of Sam Sheppard, then the blank in the question 'Gerber wanted to try Sheppard in the _______?' could be filled with 'courtroom' or more specifically 'Cuyahoga County Court of Common Pleas' as Gerber (the prosecutor in this case) wanted to prosecute Sheppard for the murder of his wife.