Great British Baking Show (9 p.m., UNC-TV) – In the season finale, a look back includes Luis’s amazing 3-D biscuit scene via the technically challenging Schichttorte and Ian’s binning of his baked Alaska.
Also on tonight . . .
Summer Olympics (NBC, other channels) – The games continue with track & field, diving, swimming and beach volleyball. Check out the full TV and live-stream schedule at nbcolympics.com.
Ancient Aliens (9 p.m., History) – Theorists point to the archeological site of Arkaim as evidence that extraterrestrial visitations took place in Russia.
Dark Matter (10 p.m., Syfy) – Three crew members infiltrate a highly secure facility with the help of their handler.