Considering a July 23, 2018 petition for writ of mandamus requesting that this Court issue a writ, on an expedited basis, directing the Superior Court judge assigned to the underlying matter (the "nominal respondent") to quash a subpoena issued by the plaintiffs in that case, the petitioner has failed to establish that it has no other adequate means to attain the desired relief. Consequently, the petitioner has failed to establish one of the three prerequisites to obtaining mandamus relief from this Court. Because the petitioner may obtain appellate review of the nominal respondent's decisions with respect to the subpoena on appeal from an adverse final judgment and may obtain immediate review by standing in contempt if it fails to comply with the subpoena and then appeals from the contempt order, it has failed to meet its burden of establishing that it is entitled to a writ of mandamus. Accordingly, the petition is denied.