Right from the off Banks O’Dee were on the front foot and in only four minutes were awarded a penalty after a challenge from Jack Mitchell.
It resulted in the referee pointing to the spot and ex-Saints player, Keith Horne, stepping up to put the Dee in front.
Eight minutes later it was 2-0 when a cross from the left was nodded on by a Banchory defender, finding a Dee player totally unmarked to head over the advancing Blair McIntosh.
It was not the start Banchory wanted and the Dee continued to look dangerous. Mistakes did not help with passes going astray, and one from Darren Reid let Horne in but the young defender recovered to snuff out the danger.
Saints’ first real chance came after 25 minutes when Darren Pyper won the ball in midfield and found Jack Henderson just inside the Dee penalty box, but the striker waited too long and his final shot was blocked by the defence.
On the half hour, Reid cleared a Dee shot off his goal line and then a Horne volley went close.
Reid then found Andy Close with a long ball down the right and the midfielder went close with an angled shot that zipped past the post.
Banchory were gaining confidence and making openings, and Sean Napier was presented with a guilt-edged chance after 32 minutes when the home No. 5 passed straight to him but the Dee keeper was quick off his line to block a certain goal.
Three minutes later, Close was in a good position to get in a penetrating cross but the end result was easily cleared.
Just as it seemed Banchory would go in at half time just two behind, a move down the right saw the ball squared finding a Dee player who turned and hit a low trundling shot into the corner of the Banchory net to make it 3-0 at the interval.
Out came the players for the second half and within two minutes Banchory made a change with Mitchell being replaced by Ryan Whelan. Another change was enforced very shortly afterwards when Steve Gray sustained a head knock and was replaced by John Smith.