Larkin's defiant 70 gave the home side a fighting chance in pursuit of 183 but the contributions were few and far between with both bat and ball.
Scorchers opener Jason Roy, who led the way in an 83-run opening stand from 57 deliveries, took the game away from the Stars early doors.
The Stars in response were unable to get into their groove with early wickets falling until a half-century stand between Larkin and Nic Maddinson sparked life into the chase.
Some late hitting from Hilton Carwright took the game into the final over but it proved to be too big of an ask.
LARKIN’S PURPLE PATCH
Larkin is making batting look easy out in the middle.
The number-three batsman's red-hot form continued, hammering his third straight score above 40 in the past week.
He played a lone hand in his 70 run knock from 34 balls, the highlight being a crunching straight drive down the ground, dancing down the wicket to spinner Fawad Ahmed and dispatching him over the fence.
His innings also featured nine fours, steering the Stars to a solid 170 runs from their 20 overs.
He won’t have the stats to show it, but Billy Stanlake bowled with aplomb on a night where the Scorchers batsman had the best of the Stars attack.
Stanlake opened up the innings by conceding just three runs and his second over was even better.
Skipper Glenn Maxwell turned to Stanlake again after a blistering two over patch from Jason Roy and the quick delivered, leaking another three runs
He also bowled the final over of the innings and finished with tidy figures of 0/19.
The Stars take on the Sydney Sixers at the MCG clash to keep their finals hopes alive on Tuesday in their final H&A match of BBL|10