The Frenchman was in from the start and put the hosts ahead with just seven minutes on the clock.
He robbed Kyle Walker-Peters near the halfway line, raced paced him, before sitting down Harry Winks and tucking the ball calmly under Hugo Lloris.
It's a nightmare start for Spurs...— Football on BT Sport (@btsportfootball) December 11, 2018
From a free-kick in an attacking area to conceding a goal in seconds
Ousmane Dembele, absolutely ruthless ⚡️ pic.twitter.com/Ka15xNZUQg
That’s now four goals and five assists in his last nine Barcelona outings for Dembele. Impressive stuff.