Commonwealth v. McGrath

George McGrath purports to appeal from the decision of a single justice of this court, pursuant to the gatekeeper provision of G. L. c. 278, § 33E, denying leave to appeal from the denial of his motion for a new trial on charges of murder in the first degree and assault with intent to rob. “A defendant who is denied leave to appeal from a single justice acting as a gatekeeper . . . has no right to appeal from the single justice’s ruling denying leave. The single justice’s ruling is ‘final and unreviewable.’ ” Commonwealth v. Companiono, 472 Mass. 1004, 1005 (2015), quoting Commonwealth v.…