Wednesday's TV highlights: 'grown-ish' on Freeform
The Amazing Race Contestants scale buildings and run through the narrow streets of Tangiers, Morocco, in this new episode. 8 p.m. CBS
The Blacklist The series marks its 100th episode with a guest appearance by Nathan Lane. James Spader, Megan Boone and Harry Lennix star. 8 p.m. NBC
Riverdale...