Houston has a problem as Celtic shoot down Terrors
With half an hour gone of an absorbing first half, the Senegalese striker latched on to a Marc-Antoine Fortune pass before curling an unstoppable shot past Dusan Pernis.
Tannadice substitute Jennison Myrie-Williams, on in the 62nd minute for Danny Swanson, was dismissed in controversial circumstances by referee Iain Brines for picking up two bookings.