But after a sustained period of pressure by the Cowboys, Cronk restored the Storm's advantage by scoring his own try in the 29th minute and sending the last pass to Will Chambers two minutes before halftime to give the Storm a 16-6 lead.
To show he not only can produce in attack, Cronk held up Linnett in the left corner with a crucial try-saving tackle just minutes after the break.
Linnett had received an inside pass from Winterstein in the left corner, and Cronk managed to get a hand under the Cowboys player and ensured he couldn't cleanly get the ball down.
Just for good measure, Cronk barged over the Cowboys line on 49 minutes for his second try of the night and pushed the lead out to 14.
The Cowboys eventually hit back with winger Ashley Graham crossing in the corner in the 71st minute to build some hope for the home side after a 10-minute period of sustained pressure.
But Storm fullback Billy Slater ensured the Storm win when he jumped highest and knocked back a Cronk bomb for Chambers to bag his second try of the night on 75 minutes.
Ryan Hoffman put the final nail in the coffin with two minutes to go, Gareth Widdop putting the back-rower into a gap just metres out from the Cowboys line.
Not everything went the Storm's way, however, with Siosaia Vave put on report for a crusher tackle on Cowboys co-captain Matt Scott and centre Justin O'Neill taken off the field with 10 minutes remaining with a lost tooth and suspected broken jaw.
- AAP