Two teenagers convicted of murdering Adelaide pensioner Anne Redman will be allowed to appeal against their 20-year non-parole jail terms.
The teenagers, now 18 and 19, cannot be identified publicly because they were juveniles at the time of the killing.
The Supreme Court previously heard the pair broke into the 87-year-old's woman's Seacliff home on Australia Day 2011 and cut her throat several times after she went outside with a torch to investigate the sound of breaking glass.
In sentencing, Justice Margaret Nyland described the offending as senseless and horrific and jailed the teenagers for a minimum of two decades.
Both youths, one of them a policeman's son, have lodged appeals against their sentences, saying they were manifestly excessive.
The prosecution conceded there was a reasonably arguable case and Justice Richard White granted permission to appeal.
The case will be heard before the Court of Criminal Appeal later.