Christian Nade netted a brace as Dumbarton came from behind to beat Queen of the South 4-2 in a topsy-turvy clash.The hosts opened the scoring after four minutes when Nade tucked the ball beyond Robbie Thomson but Queens were level in the 28th minute when Iain Russell found the top corner from the middle of the box.The visitors took the lead two minutes before the break when Alex Harris slotted past Jamie Ewings.But Dumbarton flew out of the blocks in the second half, with Tom Walsh levelling things up in the 48th minute before Nade put his side ahead two minutes later.Garry Fleming made the points safe in the 86th minute when he scored from the penalty spot after Gregor Buchanan had been fouled in the box.