CONBOY, J. In this Rule 11 petition, see Sup. Ct. R. 11, the State appeals the determination of the Superior Court (Smukler, J.) that the rule announced in Miller v. Alabama, 132 S. Ct. 2455 (2012), precluding the imposition of mandatory life-without-the-possibility-of-parole sentences on juvenile offenders under the age of eighteen at the time of their crimes, applies retroactively to the respondents (petitioners in the trial court), Robert Dingman, Eduardo Lopez, Jr., Michael Soto, and Robert Tulloch on collateral review. We affirm.